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51100051 = 1034091213
BaseRepresentation
bin1100001011101…
…1100110010011
310120011011002111
43002323212103
5101040200201
65023130151
71160225512
oct302734623
9116134074
1051100051
1126932252
1215143957
13a782022
146b02679
154745b51
hex30bb993

51100051 has 8 divisors (see below), whose sum is σ = 51764960. Its totient is φ = 50438592.

The previous prime is 51100033. The next prime is 51100057. The reversal of 51100051 is 15000115.

Adding to 51100051 its reverse (15000115), we get a palindrome (66100166).

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 51100051 - 25 = 51100019 is a prime.

It is a super-2 number, since 2×511000512 = 5222430424405202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51100057) 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, 41521 + ... + 42733.

It is an arithmetic number, because the mean of its divisors is an integer number (6470620).

Almost surely, 251100051 is an apocalyptic number.

51100051 is a deficient number, since it is larger than the sum of its proper divisors (664909).

51100051 is a wasteful number, since it uses less digits than its factorization.

51100051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725.

The product of its (nonzero) digits is 25, while the sum is 13.

The square root of 51100051 is about 7148.4299674824. The cubic root of 51100051 is about 371.0853231636.

The spelling of 51100051 in words is "fifty-one million, one hundred thousand, fifty-one".

Divisors: 1 103 409 1213 42127 124939 496117 51100051