55158712 has 48 divisors (see below), whose sum is σ = 123591960. Its totient is φ = 22994496.

The previous prime is 55158709. The next prime is 55158713. The reversal of 55158712 is 21785155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55158713) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12603 + ... + 16405.

Almost surely, 2^55158712 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 55158712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61795980).

55158712 is an abundant number, since it is smaller than the sum of its proper divisors (68433248).

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

55158712 is a wasteful number, since it uses less digits than its factorization.

55158712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3860 (or 3849 counting only the distinct ones).

The product of its digits is 14000, while the sum is 34.

The square root of 55158712 is about 7426.8911396357. The cubic root of 55158712 is about 380.6606973170.

The spelling of 55158712 in words is "fifty-five million, one hundred fifty-eight thousand, seven hundred twelve".