52645521951 has 48 divisors (see below), whose sum is σ = 87606634752. Its totient is φ = 30151334400.

The previous prime is 52645521947. The next prime is 52645521979. The reversal of 52645521951 is 15912554625.

52645521951 is a `hidden beast` number, since 5 + 2 + 6 + 4 + 552 + 1 + 95 + 1 = 666.

It is not a de Polignac number, because 52645521951 - 2² = 52645521947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52645521897 and 52645521906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52645521911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49711 + ... + 328271.

It is an arithmetic number, because the mean of its divisors is an integer number (1825138224).

Almost surely, 2^52645521951 is an apocalyptic number.

52645521951 is a deficient number, since it is larger than the sum of its proper divisors (34961112801).

52645521951 is a wasteful number, since it uses less digits than its factorization.

52645521951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278684 (or 278681 counting only the distinct ones).

The product of its digits is 540000, while the sum is 45.

The spelling of 52645521951 in words is "fifty-two billion, six hundred forty-five million, five hundred twenty-one thousand, nine hundred fifty-one".