51460915275 has 576 divisors, whose sum is σ = 131267788800. Its totient is φ = 19128960000.

The previous prime is 51460915273. The next prime is 51460915279. The reversal of 51460915275 is 57251906415.

It is a happy number.

51460915275 is a `hidden beast` number, since 5 + 1 + 4 + 609 + 15 + 27 + 5 = 666.

It is not a de Polignac number, because 51460915275 - 2¹ = 51460915273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 51460915275.

It is not an unprimeable number, because it can be changed into a prime (51460915273) by changing a digit.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 1255144255 + ... + 1255144295.

Almost surely, 2^51460915275 is an apocalyptic number.

51460915275 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51460915275 is an abundant number, since it is smaller than the sum of its proper divisors (79806873525).

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

51460915275 is a wasteful number, since it uses less digits than its factorization.

51460915275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 51460915275 in words is "fifty-one billion, four hundred sixty million, nine hundred fifteen thousand, two hundred seventy-five".