55137375 has 96 divisors (see below), whose sum is σ = 111533760. Its totient is φ = 26784000.

The previous prime is 55137359. The next prime is 55137377. The reversal of 55137375 is 57373155.

It is a happy number.

55137375 is a `hidden beast` number, since 5 + 513 + 73 + 75 = 666.

It is not a de Polignac number, because 55137375 - 2⁴ = 55137359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55137377) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1778610 + ... + 1778640.

It is an arithmetic number, because the mean of its divisors is an integer number (1161810).

Almost surely, 2^55137375 is an apocalyptic number.

55137375 is an abundant number, since it is smaller than the sum of its proper divisors (56396385).

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

55137375 is a wasteful number, since it uses less digits than its factorization.

55137375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 56 counting only the distinct ones).

The product of its digits is 55125, while the sum is 36.

The square root of 55137375 is about 7425.4545315422. The cubic root of 55137375 is about 380.6116074300.

The spelling of 55137375 in words is "fifty-five million, one hundred thirty-seven thousand, three hundred seventy-five".