55137285 has 24 divisors (see below), whose sum is σ = 109224960. Its totient is φ = 25205472.

The previous prime is 55137253. The next prime is 55137293. The reversal of 55137285 is 58273155.

It is not a de Polignac number, because 55137285 - 2⁵ = 55137253 is a prime.

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, 87205 + ... + 87834.

It is an arithmetic number, because the mean of its divisors is an integer number (4551040).

Almost surely, 2^55137285 is an apocalyptic number.

It is an amenable number.

55137285 is a deficient number, since it is larger than the sum of its proper divisors (54087675).

55137285 is a wasteful number, since it uses less digits than its factorization.

55137285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175057 (or 175054 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 55137285 is about 7425.4484713046. The cubic root of 55137285 is about 380.6114003408.

The spelling of 55137285 in words is "fifty-five million, one hundred thirty-seven thousand, two hundred eighty-five".