56281929 has 32 divisors (see below), whose sum is σ = 84257280. Its totient is φ = 33129600.

The previous prime is 56281903. The next prime is 56281949. The reversal of 56281929 is 92918265.

It is not a de Polignac number, because 56281929 - 2¹⁹ = 55757641 is a prime.

It is a super-2 number, since 2×56281929² = 6335311063922082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56281949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266634 + ... + 266844.

It is an arithmetic number, because the mean of its divisors is an integer number (2633040).

Almost surely, 2^56281929 is an apocalyptic number.

56281929 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

56281929 is a deficient number, since it is larger than the sum of its proper divisors (27975351).

56281929 is a wasteful number, since it uses less digits than its factorization.

56281929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421.

The product of its digits is 77760, while the sum is 42.

The square root of 56281929 is about 7502.1282980232. The cubic root of 56281929 is about 383.2271987623.

It can be divided in two parts, 5628 and 1929, that added together give a palindrome (7557).

The spelling of 56281929 in words is "fifty-six million, two hundred eighty-one thousand, nine hundred twenty-nine".