56421586 has 8 divisors (see below), whose sum is σ = 91142604. Its totient is φ = 26040720.

The previous prime is 56421577. The next prime is 56421593. The reversal of 56421586 is 68512465.

It can be written as a sum of positive squares in 2 ways, for example, as 55577025 + 844561 = 7455^2 + 919^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085005 + ... + 1085056.

Almost surely, 2^56421586 is an apocalyptic number.

56421586 is a deficient number, since it is larger than the sum of its proper divisors (34721018).

56421586 is a wasteful number, since it uses less digits than its factorization.

56421586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170076.

The product of its digits is 57600, while the sum is 37.

The square root of 56421586 is about 7511.4303564634. The cubic root of 56421586 is about 383.5439147112.

The spelling of 56421586 in words is "fifty-six million, four hundred twenty-one thousand, five hundred eighty-six".