55971593 has 8 divisors (see below), whose sum is σ = 56652480. Its totient is φ = 55293840.

The previous prime is 55971583. The next prime is 55971611. The reversal of 55971593 is 39517955.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55971593 - 2²⁰ = 54923017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55971563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67103 + ... + 67931.

It is an arithmetic number, because the mean of its divisors is an integer number (7081560).

Almost surely, 2^55971593 is an apocalyptic number.

It is an amenable number.

55971593 is a deficient number, since it is larger than the sum of its proper divisors (680887).

55971593 is a wasteful number, since it uses less digits than its factorization.

55971593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567.

The product of its digits is 212625, while the sum is 44.

The square root of 55971593 is about 7481.4165102606. The cubic root of 55971593 is about 382.5215343793.

The spelling of 55971593 in words is "fifty-five million, nine hundred seventy-one thousand, five hundred ninety-three".