53811657 has 12 divisors (see below), whose sum is σ = 78018304. Its totient is φ = 35740440.

The previous prime is 53811649. The next prime is 53811671. The reversal of 53811657 is 75611835.

53811657 is a `hidden beast` number, since 538 + 116 + 5 + 7 = 666.

53811657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53811657 - 2³ = 53811649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53811677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8593 + ... + 13470.

Almost surely, 2^53811657 is an apocalyptic number.

It is an amenable number.

53811657 is a deficient number, since it is larger than the sum of its proper divisors (24206647).

53811657 is a wasteful number, since it uses less digits than its factorization.

53811657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22340 (or 22337 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 53811657 is about 7335.6429166093. The cubic root of 53811657 is about 377.5363636155.

The spelling of 53811657 in words is "fifty-three million, eight hundred eleven thousand, six hundred fifty-seven".