56121458 has 8 divisors (see below), whose sum is σ = 85015980. Its totient is φ = 27782800.

The previous prime is 56121433. The next prime is 56121463. The reversal of 56121458 is 85412165.

It can be written as a sum of positive squares in 2 ways, for example, as 34656769 + 21464689 = 5887^2 + 4633^2 .

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

It is an alternating number because its digits alternate between odd and even.

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, 138713 + ... + 139116.

Almost surely, 2^56121458 is an apocalyptic number.

56121458 is a deficient number, since it is larger than the sum of its proper divisors (28894522).

56121458 is a wasteful number, since it uses less digits than its factorization.

56121458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277932.

The product of its digits is 9600, while the sum is 32.

The square root of 56121458 is about 7491.4256320142. The cubic root of 56121458 is about 382.8626330112.

The spelling of 56121458 in words is "fifty-six million, one hundred twenty-one thousand, four hundred fifty-eight".