56702421 has 12 divisors (see below), whose sum is σ = 83449548. Its totient is φ = 37088064.

The previous prime is 56702407. The next prime is 56702431. The reversal of 56702421 is 12420765.

It can be written as a sum of positive squares in 2 ways, for example, as 41139396 + 15563025 = 6414^2 + 3945^2 .

It is not a de Polignac number, because 56702421 - 2⁶ = 56702357 is a prime.

It is a super-2 number, since 2×56702421² = 6430329094522482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56702431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58960 + ... + 59913.

It is an arithmetic number, because the mean of its divisors is an integer number (6954129).

Almost surely, 2^56702421 is an apocalyptic number.

It is an amenable number.

56702421 is a deficient number, since it is larger than the sum of its proper divisors (26747127).

56702421 is a wasteful number, since it uses less digits than its factorization.

56702421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118932 (or 118929 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 56702421 is about 7530.1009953386. The cubic root of 56702421 is about 384.1792172882.

The spelling of 56702421 in words is "fifty-six million, seven hundred two thousand, four hundred twenty-one".