53656537 has 4 divisors (see below), whose sum is σ = 58534416. Its totient is φ = 48778660.

The previous prime is 53656531. The next prime is 53656543. The reversal of 53656537 is 73565635.

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 an interprime number because it is at equal distance from previous prime (53656531) and next prime (53656543).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53656537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53656537.

It is not an unprimeable number, because it can be changed into a prime (53656531) 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, 2438923 + ... + 2438944.

It is an arithmetic number, because the mean of its divisors is an integer number (14633604).

Almost surely, 2^53656537 is an apocalyptic number.

It is an amenable number.

53656537 is a deficient number, since it is larger than the sum of its proper divisors (4877879).

53656537 is a wasteful number, since it uses less digits than its factorization.

53656537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4877878.

The product of its digits is 283500, while the sum is 40.

The square root of 53656537 is about 7325.0622522952. The cubic root of 53656537 is about 377.1732464840.

The spelling of 53656537 in words is "fifty-three million, six hundred fifty-six thousand, five hundred thirty-seven".