55155574 has 4 divisors (see below), whose sum is σ = 82733364. Its totient is φ = 27577786.

The previous prime is 55155559. The next prime is 55155629. The reversal of 55155574 is 47555155.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13788892 + ... + 13788895.

It is an arithmetic number, because the mean of its divisors is an integer number (20683341).

Almost surely, 2^55155574 is an apocalyptic number.

55155574 is a deficient number, since it is larger than the sum of its proper divisors (27577790).

55155574 is a wasteful number, since it uses less digits than its factorization.

55155574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27577789.

The product of its digits is 87500, while the sum is 37.

The square root of 55155574 is about 7426.6798773072. The cubic root of 55155574 is about 380.6534785364.

The spelling of 55155574 in words is "fifty-five million, one hundred fifty-five thousand, five hundred seventy-four".