56858737421 has 8 divisors (see below), whose sum is σ = 61830487800. Its totient is φ = 52067778048.

The previous prime is 56858737409. The next prime is 56858737423. The reversal of 56858737421 is 12473785865.

It can be written as a sum of positive squares in 4 ways, for example, as 18211502500 + 38647234921 = 134950^2 + 196589^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 56858737421 - 2³⁴ = 39678868237 is a prime.

It is a super-2 number, since 2×56858737421² (a number of 22 digits) contains 22 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 (56858737423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45197096 + ... + 45198353.

It is an arithmetic number, because the mean of its divisors is an integer number (7728810975).

Almost surely, 2^56858737421 is an apocalyptic number.

It is an amenable number.

56858737421 is a deficient number, since it is larger than the sum of its proper divisors (4971750379).

56858737421 is a wasteful number, since it uses less digits than its factorization.

56858737421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90395503.

The product of its digits is 11289600, while the sum is 56.

The spelling of 56858737421 in words is "fifty-six billion, eight hundred fifty-eight million, seven hundred thirty-seven thousand, four hundred twenty-one".