55415558 has 16 divisors (see below), whose sum is σ = 90801216. Its totient is φ = 25155240.

The previous prime is 55415557. The next prime is 55415567. The reversal of 55415558 is 85551455.

It is a super-3 number, since 3×55415558³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55415557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23585 + ... + 25827.

It is an arithmetic number, because the mean of its divisors is an integer number (5675076).

Almost surely, 2^55415558 is an apocalyptic number.

55415558 is a deficient number, since it is larger than the sum of its proper divisors (35385658).

55415558 is a wasteful number, since it uses less digits than its factorization.

55415558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379.

The product of its digits is 100000, while the sum is 38.

The square root of 55415558 is about 7444.1626795765. The cubic root of 55415558 is about 381.2506301880.

The spelling of 55415558 in words is "fifty-five million, four hundred fifteen thousand, five hundred fifty-eight".