55331375 has 16 divisors (see below), whose sum is σ = 75333024. Its totient is φ = 40240000.

The previous prime is 55331359. The next prime is 55331377. The reversal of 55331375 is 57313355.

55331375 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55331375 - 2⁴ = 55331359 is a prime.

It is a super-2 number, since 2×55331375² = 6123122118781250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55331377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18746 + ... + 21495.

It is an arithmetic number, because the mean of its divisors is an integer number (4708314).

Almost surely, 2^55331375 is an apocalyptic number.

55331375 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55331375 is a deficient number, since it is larger than the sum of its proper divisors (20001649).

55331375 is a wasteful number, since it uses less digits than its factorization.

55331375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40267 (or 40257 counting only the distinct ones).

The product of its digits is 23625, while the sum is 32.

The square root of 55331375 is about 7438.5062344533. The cubic root of 55331375 is about 381.0574769252.

The spelling of 55331375 in words is "fifty-five million, three hundred thirty-one thousand, three hundred seventy-five".