53104050021 has 16 divisors (see below), whose sum is σ = 77329774080. Its totient is φ = 32147806320.

The previous prime is 53104050007. The next prime is 53104050023. The reversal of 53104050021 is 12005040135.

It is not a de Polignac number, because 53104050021 - 2⁵ = 53104049989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53104050021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53104050023) 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, 882081 + ... + 940358.

It is an arithmetic number, because the mean of its divisors is an integer number (4833110880).

Almost surely, 2^53104050021 is an apocalyptic number.

It is an amenable number.

53104050021 is a deficient number, since it is larger than the sum of its proper divisors (24225724059).

53104050021 is a wasteful number, since it uses less digits than its factorization.

53104050021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823336.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 53104050021 its reverse (12005040135), we get a palindrome (65109090156).

The spelling of 53104050021 in words is "fifty-three billion, one hundred four million, fifty thousand, twenty-one".