55565998 has 16 divisors (see below), whose sum is σ = 84967776. Its totient is φ = 27246240.

The previous prime is 55565989. The next prime is 55566011. The reversal of 55565998 is 89956555.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74415 + ... + 75157.

It is an arithmetic number, because the mean of its divisors is an integer number (5310486).

Almost surely, 2^55565998 is an apocalyptic number.

55565998 is a deficient number, since it is larger than the sum of its proper divisors (29401778).

55565998 is a wasteful number, since it uses less digits than its factorization.

55565998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419.

The product of its digits is 2430000, while the sum is 52.

The square root of 55565998 is about 7454.2603925540. The cubic root of 55565998 is about 381.5953199165.

The spelling of 55565998 in words is "fifty-five million, five hundred sixty-five thousand, nine hundred ninety-eight".