56990455 has 4 divisors (see below), whose sum is σ = 68388552. Its totient is φ = 45592360.

The previous prime is 56990449. The next prime is 56990459. The reversal of 56990455 is 55409965.

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

It is not a de Polignac number, because 56990455 - 2¹⁹ = 56466167 is a prime.

It is a super-2 number, since 2×56990455² = 6495823922214050, 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 (56990459) 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, 5699041 + ... + 5699050.

It is an arithmetic number, because the mean of its divisors is an integer number (17097138).

Almost surely, 2^56990455 is an apocalyptic number.

56990455 is a deficient number, since it is larger than the sum of its proper divisors (11398097).

56990455 is a wasteful number, since it uses less digits than its factorization.

56990455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11398096.

The product of its (nonzero) digits is 243000, while the sum is 43.

The square root of 56990455 is about 7549.2022757375. The cubic root of 56990455 is about 384.8286300903.

The spelling of 56990455 in words is "fifty-six million, nine hundred ninety thousand, four hundred fifty-five".