51157054152252 has 144 divisors (see below), whose sum is σ = 133799106517440. Its totient is φ = 16467777156096.

The previous prime is 51157054152199. The next prime is 51157054152271. The reversal of 51157054152252 is 25225145075115.

51157054152252 is a `hidden beast` number, since 5 + 1 + 1 + 5 + 7 + 0 + 5 + 415 + 225 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 51157054152198 and 51157054152207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1402736274 + ... + 1402772742.

Almost surely, 2^{51157054152252} 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 51157054152252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66899553258720).

51157054152252 is an abundant number, since it is smaller than the sum of its proper divisors (82642052365188).

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

51157054152252 is a wasteful number, since it uses less digits than its factorization.

51157054152252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44340 (or 44335 counting only the distinct ones).

The product of its (nonzero) digits is 700000, while the sum is 45.

The spelling of 51157054152252 in words is "fifty-one trillion, one hundred fifty-seven billion, fifty-four million, one hundred fifty-two thousand, two hundred fifty-two".