56257869 has 8 divisors (see below), whose sum is σ = 75282400. Its totient is φ = 37369296.

The previous prime is 56257849. The next prime is 56257891. The reversal of 56257869 is 96875265.

It is a happy number.

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

It is not a de Polignac number, because 56257869 - 2¹⁵ = 56225101 is a prime.

It is a super-2 number, since 2×56257869² = 6329895648842322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56257829) 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, 33019 + ... + 34680.

It is an arithmetic number, because the mean of its divisors is an integer number (9410300).

Almost surely, 2^56257869 is an apocalyptic number.

It is an amenable number.

56257869 is a deficient number, since it is larger than the sum of its proper divisors (19024531).

56257869 is a wasteful number, since it uses less digits than its factorization.

56257869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67979.

The product of its digits is 907200, while the sum is 48.

The square root of 56257869 is about 7500.5245816543. The cubic root of 56257869 is about 383.1725822938.

The spelling of 56257869 in words is "fifty-six million, two hundred fifty-seven thousand, eight hundred sixty-nine".