51812025522501 has 16 divisors (see below), whose sum is σ = 70739847158400. Its totient is φ = 33719327104320.

The previous prime is 51812025522479. The next prime is 51812025522529. The reversal of 51812025522501 is 10522552021815.

It is not a de Polignac number, because 51812025522501 - 2⁶ = 51812025522437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51812025522501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51812025522701) 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, 818716590 + ... + 818779871.

It is an arithmetic number, because the mean of its divisors is an integer number (4421240447400).

Almost surely, 2^{51812025522501} is an apocalyptic number.

It is an amenable number.

51812025522501 is a deficient number, since it is larger than the sum of its proper divisors (18927821635899).

51812025522501 is a wasteful number, since it uses less digits than its factorization.

51812025522501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637496716.

The product of its (nonzero) digits is 80000, while the sum is 39.

The spelling of 51812025522501 in words is "fifty-one trillion, eight hundred twelve billion, twenty-five million, five hundred twenty-two thousand, five hundred one".