55567790 has 32 divisors (see below), whose sum is σ = 102272544. Its totient is φ = 21732480.

The previous prime is 55567789. The next prime is 55567801. The reversal of 55567790 is 9776555.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131780 + ... + 132200.

It is an arithmetic number, because the mean of its divisors is an integer number (3196017).

Almost surely, 2^55567790 is an apocalyptic number.

55567790 is a deficient number, since it is larger than the sum of its proper divisors (46704754).

55567790 is a wasteful number, since it uses less digits than its factorization.

55567790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692.

The product of its (nonzero) digits is 330750, while the sum is 44.

The square root of 55567790 is about 7454.3805913033. The cubic root of 55567790 is about 381.5994220142.

The spelling of 55567790 in words is "fifty-five million, five hundred sixty-seven thousand, seven hundred ninety".