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51200231100421 = 134391592542219
BaseRepresentation
bin10111010010000111110111…
…00101100101000000000101
320201021200202010201111022011
423221003323211211000011
523202331033130203141
6300521021135134221
713533044312432254
oct1351037345450005
9221250663644264
1051200231100421
111534a99473a367
1258aab45974371
132275212b63aa0
14c901666cc79b
155dbc7ec99881
hex2e90fb965005

51200231100421 has 8 divisors (see below), whose sum is σ = 56421006007520. Its totient is φ = 46162641277872.

The previous prime is 51200231100401. The next prime is 51200231100427. The reversal of 51200231100421 is 12400113200215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51200231100421 - 215 = 51200231067653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51200231100392 and 51200231100401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51200231100427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45796270551 + ... + 45796271668.

It is an arithmetic number, because the mean of its divisors is an integer number (7052625750940).

Almost surely, 251200231100421 is an apocalyptic number.

It is an amenable number.

51200231100421 is a deficient number, since it is larger than the sum of its proper divisors (5220774907099).

51200231100421 is a wasteful number, since it uses less digits than its factorization.

51200231100421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91592542275.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 51200231100421 its reverse (12400113200215), we get a palindrome (63600344300636).

The spelling of 51200231100421 in words is "fifty-one trillion, two hundred billion, two hundred thirty-one million, one hundred thousand, four hundred twenty-one".

Divisors: 1 13 43 559 91592542219 1190703048847 3938479315417 51200231100421