55047258 has 96 divisors (see below), whose sum is σ = 149160960. Its totient is φ = 14307840.

The previous prime is 55047221. The next prime is 55047263. The reversal of 55047258 is 85274055.

It is a happy number.

It is a super-2 number, since 2×55047258² = 6060401226637128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65988 + ... + 66816.

It is an arithmetic number, because the mean of its divisors is an integer number (1553760).

Almost surely, 2^55047258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55047258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74580480).

55047258 is an abundant number, since it is smaller than the sum of its proper divisors (94113702).

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

55047258 is a wasteful number, since it uses less digits than its factorization.

55047258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 55047258 is about 7419.3839366891. The cubic root of 55047258 is about 380.4041360628.

The spelling of 55047258 in words is "fifty-five million, forty-seven thousand, two hundred fifty-eight".