56190557 has 4 divisors (see below), whose sum is σ = 56268576. Its totient is φ = 56112540.

The previous prime is 56190553. The next prime is 56190583. The reversal of 56190557 is 75509165.

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 56190557 - 2² = 56190553 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 56190557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56190553) 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, 37919 + ... + 39372.

It is an arithmetic number, because the mean of its divisors is an integer number (14067144).

Almost surely, 2^56190557 is an apocalyptic number.

It is an amenable number.

56190557 is a deficient number, since it is larger than the sum of its proper divisors (78019).

56190557 is an equidigital number, since it uses as much as digits as its factorization.

56190557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78018.

The product of its (nonzero) digits is 47250, while the sum is 38.

The square root of 56190557 is about 7496.0360858256. The cubic root of 56190557 is about 383.0197005321.

The spelling of 56190557 in words is "fifty-six million, one hundred ninety thousand, five hundred fifty-seven".