56228731 has 8 divisors (see below), whose sum is σ = 60620000. Its totient is φ = 51846912.

The previous prime is 56228723. The next prime is 56228747. The reversal of 56228731 is 13782265.

It is a happy number.

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

It is not a de Polignac number, because 56228731 - 2³ = 56228723 is a prime.

It is a super-3 number, since 3×56228731³ (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 (56228701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14506 + ... + 17968.

It is an arithmetic number, because the mean of its divisors is an integer number (7577500).

Almost surely, 2^56228731 is an apocalyptic number.

56228731 is a deficient number, since it is larger than the sum of its proper divisors (4391269).

56228731 is a wasteful number, since it uses less digits than its factorization.

56228731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725.

The product of its digits is 20160, while the sum is 34.

The square root of 56228731 is about 7498.5819326057. The cubic root of 56228731 is about 383.1064178560.

The spelling of 56228731 in words is "fifty-six million, two hundred twenty-eight thousand, seven hundred thirty-one".