55137270 has 32 divisors (see below), whose sum is σ = 134576640. Its totient is φ = 14453600.

The previous prime is 55137253. The next prime is 55137293. The reversal of 55137270 is 7273155.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13806 + ... + 17345.

It is an arithmetic number, because the mean of its divisors is an integer number (4205520).

Almost surely, 2^55137270 is an apocalyptic number.

55137270 is an abundant number, since it is smaller than the sum of its proper divisors (79439370).

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

55137270 is a wasteful number, since it uses less digits than its factorization.

55137270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31220.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 55137270 is about 7425.4474612645. The cubic root of 55137270 is about 380.6113658259.

The spelling of 55137270 in words is "fifty-five million, one hundred thirty-seven thousand, two hundred seventy".