56228637477 has 4 divisors (see below), whose sum is σ = 74971516640. Its totient is φ = 37485758316.

The previous prime is 56228637473. The next prime is 56228637481. The reversal of 56228637477 is 77473682265.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (56228637473) and next prime (56228637481).

It is not a de Polignac number, because 56228637477 - 2² = 56228637473 is a prime.

It is a super-3 number, since 3×56228637477³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56228637473) 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, 9371439577 + ... + 9371439582.

It is an arithmetic number, because the mean of its divisors is an integer number (18742879160).

Almost surely, 2^56228637477 is an apocalyptic number.

It is an amenable number.

56228637477 is a deficient number, since it is larger than the sum of its proper divisors (18742879163).

56228637477 is a wasteful number, since it uses less digits than its factorization.

56228637477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18742879162.

The product of its digits is 23708160, while the sum is 57.

The spelling of 56228637477 in words is "fifty-six billion, two hundred twenty-eight million, six hundred thirty-seven thousand, four hundred seventy-seven".