55097574 has 16 divisors (see below), whose sum is σ = 125937408. Its totient is φ = 15742152.

The previous prime is 55097543. The next prime is 55097591. The reversal of 55097574 is 47579055.

55097574 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1311847 = 55097574 / (5 + 5 + 0 + 9 + 7 + 5 + 7 + 4).

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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655882 + ... + 655965.

It is an arithmetic number, because the mean of its divisors is an integer number (7871088).

Almost surely, 2^55097574 is an apocalyptic number.

55097574 is an abundant number, since it is smaller than the sum of its proper divisors (70839834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55097574 is a wasteful number, since it uses less digits than its factorization.

55097574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311859.

The product of its (nonzero) digits is 220500, while the sum is 42.

The square root of 55097574 is about 7422.7740097621. The cubic root of 55097574 is about 380.5200036912.

The spelling of 55097574 in words is "fifty-five million, ninety-seven thousand, five hundred seventy-four".