53621937 has 24 divisors (see below), whose sum is σ = 78799656. Its totient is φ = 35133696.

The previous prime is 53621929. The next prime is 53621959. The reversal of 53621937 is 73912635.

It can be written as a sum of positive squares in 4 ways, for example, as 1218816 + 52403121 = 1104^2 + 7239^2 .

It is not a de Polignac number, because 53621937 - 2³ = 53621929 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53621977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193443 + ... + 193719.

It is an arithmetic number, because the mean of its divisors is an integer number (3283319).

Almost surely, 2^53621937 is an apocalyptic number.

It is an amenable number.

53621937 is a deficient number, since it is larger than the sum of its proper divisors (25177719).

53621937 is a wasteful number, since it uses less digits than its factorization.

53621937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 574 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 53621937 is about 7322.7001167602. The cubic root of 53621937 is about 377.0921566413.

The spelling of 53621937 in words is "fifty-three million, six hundred twenty-one thousand, nine hundred thirty-seven".