55120558 has 16 divisors (see below), whose sum is σ = 90817920. Its totient is φ = 24974136.

The previous prime is 55120547. The next prime is 55120601. The reversal of 55120558 is 85502155.

It is a super-3 number, since 3×55120558³ (a number of 24 digits) contains 333 as substring.

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, 30660 + ... + 32407.

It is an arithmetic number, because the mean of its divisors is an integer number (5676120).

Almost surely, 2^55120558 is an apocalyptic number.

55120558 is a deficient number, since it is larger than the sum of its proper divisors (35697362).

55120558 is a wasteful number, since it uses less digits than its factorization.

55120558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63111.

The product of its (nonzero) digits is 10000, while the sum is 31.

The square root of 55120558 is about 7424.3220565921. The cubic root of 55120558 is about 380.5729077502.

The spelling of 55120558 in words is "fifty-five million, one hundred twenty thousand, five hundred fifty-eight".