56653819 has 4 divisors (see below), whose sum is σ = 56908096. Its totient is φ = 56399544.

The previous prime is 56653789. The next prime is 56653859. The reversal of 56653819 is 91835665.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56653819 - 2⁵ = 56653787 is a prime.

It is a super-2 number, since 2×56653819² = 6419310414569522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56653859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126804 + ... + 127249.

It is an arithmetic number, because the mean of its divisors is an integer number (14227024).

Almost surely, 2^56653819 is an apocalyptic number.

56653819 is a deficient number, since it is larger than the sum of its proper divisors (254277).

56653819 is a wasteful number, since it uses less digits than its factorization.

56653819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254276.

The product of its digits is 194400, while the sum is 43.

The square root of 56653819 is about 7526.8731223530. The cubic root of 56653819 is about 384.0694205908.

The spelling of 56653819 in words is "fifty-six million, six hundred fifty-three thousand, eight hundred nineteen".