55818460 has 12 divisors (see below), whose sum is σ = 117218808. Its totient is φ = 22327376.

The previous prime is 55818449. The next prime is 55818473. The reversal of 55818460 is 6481855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1395442 + ... + 1395481.

It is an arithmetic number, because the mean of its divisors is an integer number (9768234).

Almost surely, 2^55818460 is an apocalyptic number.

It is an amenable number.

55818460 is an abundant number, since it is smaller than the sum of its proper divisors (61400348).

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

55818460 is a wasteful number, since it uses less digits than its factorization.

55818460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790932 (or 2790930 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 55818460 is about 7471.1752756845. The cubic root of 55818460 is about 382.1723681422.

It can be divided in two parts, 5581 and 8460, that added together give a palindrome (14041).

The spelling of 55818460 in words is "fifty-five million, eight hundred eighteen thousand, four hundred sixty".