51556050192 has 80 divisors (see below), whose sum is σ = 137611156608. Its totient is φ = 16623559680.

The previous prime is 51556050113. The next prime is 51556050193. The reversal of 51556050192 is 29105065515.

It is a super-2 number, since 2×51556050192² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51556050192.

It is not an unprimeable number, because it can be changed into a prime (51556050193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37908 + ... + 323340.

Almost surely, 2^51556050192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51556050192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68805578304).

51556050192 is an abundant number, since it is smaller than the sum of its proper divisors (86055106416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51556050192 is a wasteful number, since it uses less digits than its factorization.

51556050192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285568 (or 285562 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 39.

The spelling of 51556050192 in words is "fifty-one billion, five hundred fifty-six million, fifty thousand, one hundred ninety-two".