55287270 has 48 divisors (see below), whose sum is σ = 147262752. Its totient is φ = 14382720.

The previous prime is 55287259. The next prime is 55287313. The reversal of 55287270 is 7278255.

55287270 is a `hidden beast` number, since 552 + 87 + 27 + 0 = 666.

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, 3802 + ... + 11181.

It is an arithmetic number, because the mean of its divisors is an integer number (3067974).

Almost surely, 2^55287270 is an apocalyptic number.

55287270 is an abundant number, since it is smaller than the sum of its proper divisors (91975482).

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

55287270 is a wasteful number, since it uses less digits than its factorization.

55287270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15037 (or 15034 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 55287270 is about 7435.5410025095. The cubic root of 55287270 is about 380.9562022112.

The spelling of 55287270 in words is "fifty-five million, two hundred eighty-seven thousand, two hundred seventy".