55249580 has 12 divisors (see below), whose sum is σ = 116024160. Its totient is φ = 22099824.

The previous prime is 55249577. The next prime is 55249619. The reversal of 55249580 is 8594255.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1381220 + ... + 1381259.

It is an arithmetic number, because the mean of its divisors is an integer number (9668680).

Almost surely, 2^55249580 is an apocalyptic number.

It is an amenable number.

55249580 is an abundant number, since it is smaller than the sum of its proper divisors (60774580).

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

55249580 is a wasteful number, since it uses less digits than its factorization.

55249580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762488 (or 2762486 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 55249580 is about 7433.0061213482. The cubic root of 55249580 is about 380.8696150503.

The spelling of 55249580 in words is "fifty-five million, two hundred forty-nine thousand, five hundred eighty".