53051921631 has 24 divisors (see below), whose sum is σ = 77312355120. Its totient is φ = 35053948800.

The previous prime is 53051921621. The next prime is 53051921633. The reversal of 53051921631 is 13612915035.

It is a happy number.

53051921631 is a `hidden beast` number, since 5 + 3 + 0 + 5 + 19 + 2 + 1 + 631 = 666.

It is not a de Polignac number, because 53051921631 - 2¹⁸ = 53051659487 is a prime.

It is a super-2 number, since 2×53051921631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53051921633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 926001 + ... + 981621.

It is an arithmetic number, because the mean of its divisors is an integer number (3221348130).

Almost surely, 2^53051921631 is an apocalyptic number.

53051921631 is a deficient number, since it is larger than the sum of its proper divisors (24260433489).

53051921631 is a wasteful number, since it uses less digits than its factorization.

53051921631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56567 (or 56564 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The spelling of 53051921631 in words is "fifty-three billion, fifty-one million, nine hundred twenty-one thousand, six hundred thirty-one".