56987452621 has 4 divisors (see below), whose sum is σ = 62168130144. Its totient is φ = 51806775100.

The previous prime is 56987452583. The next prime is 56987452633. The reversal of 56987452621 is 12625478965.

56987452621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 56987452621 - 2³¹ = 54839968973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56987452681) 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, 2590338745 + ... + 2590338766.

It is an arithmetic number, because the mean of its divisors is an integer number (15542032536).

Almost surely, 2^56987452621 is an apocalyptic number.

It is an amenable number.

56987452621 is a deficient number, since it is larger than the sum of its proper divisors (5180677523).

56987452621 is a wasteful number, since it uses less digits than its factorization.

56987452621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5180677522.

The product of its digits is 7257600, while the sum is 55.

The spelling of 56987452621 in words is "fifty-six billion, nine hundred eighty-seven million, four hundred fifty-two thousand, six hundred twenty-one".