55158464 has 56 divisors (see below), whose sum is σ = 114665760. Its totient is φ = 26292224.

The previous prime is 55158443. The next prime is 55158473. The reversal of 55158464 is 46485155.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209597 + ... + 209859.

Almost surely, 2^55158464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55158464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57332880).

55158464 is an abundant number, since it is smaller than the sum of its proper divisors (59507296).

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

55158464 is a wasteful number, since it uses less digits than its factorization.

55158464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417 (or 407 counting only the distinct ones).

The product of its digits is 96000, while the sum is 38.

The square root of 55158464 is about 7426.8744435328. The cubic root of 55158464 is about 380.6601268178.

The spelling of 55158464 in words is "fifty-five million, one hundred fifty-eight thousand, four hundred sixty-four".