55290284 has 48 divisors (see below), whose sum is σ = 115116288. Its totient is φ = 22742208.

The previous prime is 55290259. The next prime is 55290317. The reversal of 55290284 is 48209255.

It is a happy 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, 85667 + ... + 86309.

It is an arithmetic number, because the mean of its divisors is an integer number (2398256).

Almost surely, 2^55290284 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55290284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57558144).

55290284 is an abundant number, since it is smaller than the sum of its proper divisors (59826004).

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

55290284 is a wasteful number, since it uses less digits than its factorization.

55290284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 55290284 is about 7435.7436749797. The cubic root of 55290284 is about 380.9631247278.

The spelling of 55290284 in words is "fifty-five million, two hundred ninety thousand, two hundred eighty-four".