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55830325381 = 377121252503
BaseRepresentation
bin110011111111101111…
…110010100010000101
312100002220121101110221
4303333233302202011
51403320030403011
641351553344341
74014345635635
oct637757624205
9170086541427
1055830325381
112174a843886
12a9a15680b1
13535993b5bc
1429b8bb26c5
1516bb663971
hexcffbf2885

55830325381 has 8 divisors (see below), whose sum is σ = 58146850944. Its totient is φ = 53556305040.

The previous prime is 55830325349. The next prime is 55830325387. The reversal of 55830325381 is 18352303855.

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 55830325381 - 25 = 55830325349 is a prime.

It is a super-2 number, since 2×558303253812 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55830325387) 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, 10623625 + ... + 10628878.

It is an arithmetic number, because the mean of its divisors is an integer number (7268356368).

Almost surely, 255830325381 is an apocalyptic number.

It is an amenable number.

55830325381 is a deficient number, since it is larger than the sum of its proper divisors (2316525563).

55830325381 is a wasteful number, since it uses less digits than its factorization.

55830325381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21252611.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 55830325381 in words is "fifty-five billion, eight hundred thirty million, three hundred twenty-five thousand, three hundred eighty-one".

Divisors: 1 37 71 2627 21252503 786342611 1508927713 55830325381