56450381 has 8 divisors (see below), whose sum is σ = 61701024. Its totient is φ = 51329520.

The previous prime is 56450369. The next prime is 56450413. The reversal of 56450381 is 18305465.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56450381 is a prime.

It is a super-2 number, since 2×56450381² = 6373291030090322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56450341) 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, 31535 + ... + 33276.

It is an arithmetic number, because the mean of its divisors is an integer number (7712628).

Almost surely, 2^56450381 is an apocalyptic number.

It is an amenable number.

56450381 is a deficient number, since it is larger than the sum of its proper divisors (5250643).

56450381 is a wasteful number, since it uses less digits than its factorization.

56450381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64891.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 56450381 is about 7513.3468574265. The cubic root of 56450381 is about 383.6091513788.

The spelling of 56450381 in words is "fifty-six million, four hundred fifty thousand, three hundred eighty-one".