55571672 has 32 divisors (see below), whose sum is σ = 114609600. Its totient is φ = 25100544.

The previous prime is 55571639. The next prime is 55571683. The reversal of 55571672 is 27617555.

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, 797 + ... + 10572.

It is an arithmetic number, because the mean of its divisors is an integer number (3581550).

Almost surely, 2^55571672 is an apocalyptic number.

55571672 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55571672 is an abundant number, since it is smaller than the sum of its proper divisors (59037928).

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

55571672 is a wasteful number, since it uses less digits than its factorization.

55571672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11435 (or 11431 counting only the distinct ones).

The product of its digits is 73500, while the sum is 38.

The square root of 55571672 is about 7454.6409705632. The cubic root of 55571672 is about 381.6083080641.

It can be divided in two parts, 555 and 71672, that added together give a palindrome (72227).

The spelling of 55571672 in words is "fifty-five million, five hundred seventy-one thousand, six hundred seventy-two".