56890281 has 8 divisors (see below), whose sum is σ = 86689984. Its totient is φ = 32508720.

The previous prime is 56890277. The next prime is 56890289. The reversal of 56890281 is 18209865.

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

It is not a de Polignac number, because 56890281 - 2² = 56890277 is a prime.

It is a super-2 number, since 2×56890281² = 6473008144517922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56890289) 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, 1354510 + ... + 1354551.

It is an arithmetic number, because the mean of its divisors is an integer number (10836248).

Almost surely, 2^56890281 is an apocalyptic number.

It is an amenable number.

56890281 is a deficient number, since it is larger than the sum of its proper divisors (29799703).

56890281 is a wasteful number, since it uses less digits than its factorization.

56890281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709071.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 56890281 is about 7542.5646168926. The cubic root of 56890281 is about 384.6030225329.

The spelling of 56890281 in words is "fifty-six million, eight hundred ninety thousand, two hundred eighty-one".