56229931 has 4 divisors (see below), whose sum is σ = 59537592. Its totient is φ = 52922272.

The previous prime is 56229919. The next prime is 56229977. The reversal of 56229931 is 13992265.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56229931 is a prime.

It is a super-3 number, since 3×56229931³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56229991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1653805 + ... + 1653838.

It is an arithmetic number, because the mean of its divisors is an integer number (14884398).

Almost surely, 2^56229931 is an apocalyptic number.

56229931 is a deficient number, since it is larger than the sum of its proper divisors (3307661).

56229931 is a wasteful number, since it uses less digits than its factorization.

56229931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307660.

The product of its digits is 29160, while the sum is 37.

The square root of 56229931 is about 7498.6619473077. The cubic root of 56229931 is about 383.1091431794.

It can be divided in two parts, 562299 and 31, that added together give a triangular number (562330 = T₁₀₆₀).

The spelling of 56229931 in words is "fifty-six million, two hundred twenty-nine thousand, nine hundred thirty-one".