56578357 has 4 divisors (see below), whose sum is σ = 61721856. Its totient is φ = 51434860.

The previous prime is 56578349. The next prime is 56578369. The reversal of 56578357 is 75387565.

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 56578357 - 2³ = 56578349 is a prime.

It is a super-3 number, since 3×56578357³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56578307) 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, 2571733 + ... + 2571754.

It is an arithmetic number, because the mean of its divisors is an integer number (15430464).

Almost surely, 2^56578357 is an apocalyptic number.

It is an amenable number.

56578357 is a deficient number, since it is larger than the sum of its proper divisors (5143499).

56578357 is a wasteful number, since it uses less digits than its factorization.

56578357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5143498.

The product of its digits is 882000, while the sum is 46.

The square root of 56578357 is about 7521.8586134013. The cubic root of 56578357 is about 383.8988200041.

The spelling of 56578357 in words is "fifty-six million, five hundred seventy-eight thousand, three hundred fifty-seven".