55290285 has 24 divisors (see below), whose sum is σ = 100882080. Its totient is φ = 27935712.

The previous prime is 55290259. The next prime is 55290317. The reversal of 55290285 is 58209255.

It is not a de Polignac number, because 55290285 - 2¹³ = 55282093 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, 31479 + ... + 33188.

It is an arithmetic number, because the mean of its divisors is an integer number (4203420).

Almost surely, 2^55290285 is an apocalyptic number.

It is an amenable number.

55290285 is a deficient number, since it is larger than the sum of its proper divisors (45591795).

55290285 is a wasteful number, since it uses less digits than its factorization.

55290285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64697 (or 64694 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 55290285 is about 7435.7437422224. The cubic root of 55290285 is about 380.9631270245.

The spelling of 55290285 in words is "fifty-five million, two hundred ninety thousand, two hundred eighty-five".