56775819 has 8 divisors (see below), whose sum is σ = 79685440. Its totient is φ = 35858376.

The previous prime is 56775791. The next prime is 56775827. The reversal of 56775819 is 91857765.

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

It is not a de Polignac number, because 56775819 - 2⁹ = 56775307 is a prime.

It is a super-2 number, since 2×56775819² = 6446987246241522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56775839) 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, 497977 + ... + 498090.

It is an arithmetic number, because the mean of its divisors is an integer number (9960680).

Almost surely, 2^56775819 is an apocalyptic number.

56775819 is a deficient number, since it is larger than the sum of its proper divisors (22909621).

56775819 is a wasteful number, since it uses less digits than its factorization.

56775819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996089.

The product of its digits is 529200, while the sum is 48.

The square root of 56775819 is about 7534.9730590096. The cubic root of 56775819 is about 384.3449117303.

The spelling of 56775819 in words is "fifty-six million, seven hundred seventy-five thousand, eight hundred nineteen".