53997537 has 16 divisors (see below), whose sum is σ = 81957888. Its totient is φ = 31302480.

The previous prime is 53997523. The next prime is 53997539. The reversal of 53997537 is 73579935.

It is not a de Polignac number, because 53997537 - 2⁴ = 53997521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53997539) 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, 34813 + ... + 36330.

It is an arithmetic number, because the mean of its divisors is an integer number (5122368).

Almost surely, 2^53997537 is an apocalyptic number.

It is an amenable number.

53997537 is a deficient number, since it is larger than the sum of its proper divisors (27960351).

53997537 is a wasteful number, since it uses less digits than its factorization.

53997537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71180.

The product of its digits is 893025, while the sum is 48.

The square root of 53997537 is about 7348.3016405153. The cubic root of 53997537 is about 377.9705682412.

The spelling of 53997537 in words is "fifty-three million, nine hundred ninety-seven thousand, five hundred thirty-seven".