55431150 has 48 divisors (see below), whose sum is σ = 143455104. Its totient is φ = 14138080.

The previous prime is 55431137. The next prime is 55431161. The reversal of 55431150 is 5113455.

It is a super-2 number, since 2×55431150² = 6145224780645000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55431150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4584 + ... + 11483.

It is an arithmetic number, because the mean of its divisors is an integer number (2988648).

Almost surely, 2^55431150 is an apocalyptic number.

55431150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55431150 is an abundant number, since it is smaller than the sum of its proper divisors (88023954).

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

55431150 is a wasteful number, since it uses less digits than its factorization.

55431150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16105 (or 16100 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 55431150 is about 7445.2098694395. The cubic root of 55431150 is about 381.2863836996.

The spelling of 55431150 in words is "fifty-five million, four hundred thirty-one thousand, one hundred fifty".