55391576 has 16 divisors (see below), whose sum is σ = 109968840. Its totient is φ = 26066560.

The previous prime is 55391569. The next prime is 55391591. The reversal of 55391576 is 67519355.

55391576 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 203510 + ... + 203781.

Almost surely, 2^55391576 is an apocalyptic number.

It is an amenable number.

55391576 is a deficient number, since it is larger than the sum of its proper divisors (54577264).

55391576 is a wasteful number, since it uses less digits than its factorization.

55391576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407314 (or 407310 counting only the distinct ones).

The product of its digits is 141750, while the sum is 41.

The square root of 55391576 is about 7442.5517129544. The cubic root of 55391576 is about 381.1956247454.

It can be divided in two parts, 553 and 91576, that added together give a palindrome (92129).

The spelling of 55391576 in words is "fifty-five million, three hundred ninety-one thousand, five hundred seventy-six".