53204496921 has 21 divisors (see below), whose sum is σ = 79779592549. Its totient is φ = 35465512716.

The previous prime is 53204496911. The next prime is 53204496929. The reversal of 53204496921 is 12969440235.

The square root of 53204496921 is 230661.

It is a perfect power (a square), and thus also a powerful number.

53204496921 is a `hidden beast` number, since 53 + 20 + 4 + 496 + 92 + 1 = 666.

It is not a de Polignac number, because 53204496921 - 2⁵ = 53204496889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53204496929) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 6223576 + ... + 6232118.

Almost surely, 2^53204496921 is an apocalyptic number.

53204496921 is the 230661-st square number.

53204496921 is the 115331-st centered octagonal number.

It is an amenable number.

53204496921 is a deficient number, since it is larger than the sum of its proper divisors (26575095628).

53204496921 is an frugal number, since it uses more digits than its factorization.

53204496921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17104 (or 8546 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 53204496921 in words is "fifty-three billion, two hundred four million, four hundred ninety-six thousand, nine hundred twenty-one".