57649537 has 4 divisors (see below), whose sum is σ = 62890416. Its totient is φ = 52408660.

The previous prime is 57649507. The next prime is 57649573. The reversal of 57649537 is 73594675.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57649537 - 2¹¹ = 57647489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57649507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2620423 + ... + 2620444.

It is an arithmetic number, because the mean of its divisors is an integer number (15722604).

Almost surely, 2^57649537 is an apocalyptic number.

It is an amenable number.

57649537 is a deficient number, since it is larger than the sum of its proper divisors (5240879).

57649537 is a wasteful number, since it uses less digits than its factorization.

57649537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5240878.

The product of its digits is 793800, while the sum is 46.

The square root of 57649537 is about 7592.7292194573. The cubic root of 57649537 is about 386.3064338038.

The spelling of 57649537 in words is "fifty-seven million, six hundred forty-nine thousand, five hundred thirty-seven".