53495493921 has 12 divisors (see below), whose sum is σ = 77276706000. Its totient is φ = 35661153240.

The previous prime is 53495493917. The next prime is 53495493923. The reversal of 53495493921 is 12939459435.

53495493921 is a `hidden beast` number, since 5 + 3 + 4 + 9 + 549 + 3 + 92 + 1 = 666.

It is not a de Polignac number, because 53495493921 - 2² = 53495493917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53495493923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69171 + ... + 334328.

It is an arithmetic number, because the mean of its divisors is an integer number (6439725500).

Almost surely, 2^53495493921 is an apocalyptic number.

It is an amenable number.

53495493921 is a deficient number, since it is larger than the sum of its proper divisors (23781212079).

53495493921 is a wasteful number, since it uses less digits than its factorization.

53495493921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418236 (or 418233 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 54.

The spelling of 53495493921 in words is "fifty-three billion, four hundred ninety-five million, four hundred ninety-three thousand, nine hundred twenty-one".