55058840 has 16 divisors (see below), whose sum is σ = 123882480. Its totient is φ = 22023520.

The previous prime is 55058831. The next prime is 55058897. The reversal of 55058840 is 4885055.

It is a happy number.

It is a super-3 number, since 3×55058840³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55058840.

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, 688196 + ... + 688275.

It is an arithmetic number, because the mean of its divisors is an integer number (7742655).

Almost surely, 2^55058840 is an apocalyptic number.

It is an amenable number.

55058840 is an abundant number, since it is smaller than the sum of its proper divisors (68823640).

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

55058840 is a wasteful number, since it uses less digits than its factorization.

55058840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376482 (or 1376478 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 35.

The square root of 55058840 is about 7420.1644186635. The cubic root of 55058840 is about 380.4308133331.

The spelling of 55058840 in words is "fifty-five million, fifty-eight thousand, eight hundred forty".