56258281 has 8 divisors (see below), whose sum is σ = 57693384. Its totient is φ = 54837120.

The previous prime is 56258269. The next prime is 56258327. The reversal of 56258281 is 18285265.

It can be written as a sum of positive squares in 4 ways, for example, as 15872256 + 40386025 = 3984^2 + 6355^2 .

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

It is a 4-Lehmer number, since φ(56258281) divides (56258281-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 56258281 - 2⁵ = 56258249 is a prime.

It is a super-2 number, since 2×56258281² = 6329988362149922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56258281.

It is not an unprimeable number, because it can be changed into a prime (56258681) 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, 4941 + ... + 11701.

It is an arithmetic number, because the mean of its divisors is an integer number (7211673).

Almost surely, 2^56258281 is an apocalyptic number.

It is an amenable number.

56258281 is a deficient number, since it is larger than the sum of its proper divisors (1435103).

56258281 is a wasteful number, since it uses less digits than its factorization.

56258281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6971.

The product of its digits is 38400, while the sum is 37.

The square root of 56258281 is about 7500.5520463497. The cubic root of 56258281 is about 383.1735176695.

It can be divided in two parts, 5625 and 8281, that multiplied together give a square (46580625 = 6825²).

The spelling of 56258281 in words is "fifty-six million, two hundred fifty-eight thousand, two hundred eighty-one".