55562890 has 8 divisors (see below), whose sum is σ = 100013220. Its totient is φ = 22225152.

The previous prime is 55562873. The next prime is 55562909. The reversal of 55562890 is 9826555.

It can be written as a sum of positive squares in 2 ways, for example, as 54420129 + 1142761 = 7377^2 + 1069^2 .

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, 2778135 + ... + 2778154.

Almost surely, 2^55562890 is an apocalyptic number.

55562890 is a deficient number, since it is larger than the sum of its proper divisors (44450330).

55562890 is a wasteful number, since it uses less digits than its factorization.

55562890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556296.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 55562890 is about 7454.0519182522. The cubic root of 55562890 is about 381.5882051316.

The spelling of 55562890 in words is "fifty-five million, five hundred sixty-two thousand, eight hundred ninety".