56909290 has 8 divisors (see below), whose sum is σ = 102436740. Its totient is φ = 22763712.

The previous prime is 56909287. The next prime is 56909317. The reversal of 56909290 is 9290965.

It can be written as a sum of positive squares in 2 ways, for example, as 51940849 + 4968441 = 7207^2 + 2229^2 .

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, 2845455 + ... + 2845474.

Almost surely, 2^56909290 is an apocalyptic number.

56909290 is a deficient number, since it is larger than the sum of its proper divisors (45527450).

56909290 is a wasteful number, since it uses less digits than its factorization.

56909290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5690936.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 56909290 is about 7543.8246268057. The cubic root of 56909290 is about 384.6458541297.

The spelling of 56909290 in words is "fifty-six million, nine hundred nine thousand, two hundred ninety".