55558494 has 64 divisors (see below), whose sum is σ = 128494080. Its totient is φ = 17781120.

The previous prime is 55558483. The next prime is 55558513. The reversal of 55558494 is 49485555.

55558494 is a `hidden beast` number, since 5 + 5 + 558 + 4 + 94 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164694 + ... + 165030.

It is an arithmetic number, because the mean of its divisors is an integer number (2007720).

Almost surely, 2^55558494 is an apocalyptic number.

55558494 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55558494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64247040).

55558494 is an abundant number, since it is smaller than the sum of its proper divisors (72935586).

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

55558494 is a wasteful number, since it uses less digits than its factorization.

55558494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 456 counting only the distinct ones).

The product of its digits is 720000, while the sum is 45.

The square root of 55558494 is about 7453.7570392387. The cubic root of 55558494 is about 381.5781414243.

It can be divided in two parts, 555 and 58494, that added together give a 10-th power (59049 = 3¹⁰).

The spelling of 55558494 in words is "fifty-five million, five hundred fifty-eight thousand, four hundred ninety-four".