55509260 has 24 divisors (see below), whose sum is σ = 122705520. Its totient is φ = 21034944.

The previous prime is 55509257. The next prime is 55509269. The reversal of 55509260 is 6290555.

It is not an unprimeable number, because it can be changed into a prime (55509269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72659 + ... + 73418.

It is an arithmetic number, because the mean of its divisors is an integer number (5112730).

Almost surely, 2^55509260 is an apocalyptic number.

It is an amenable number.

55509260 is an abundant number, since it is smaller than the sum of its proper divisors (67196260).

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

55509260 is a wasteful number, since it uses less digits than its factorization.

55509260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146105 (or 146103 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 55509260 is about 7450.4536774615. The cubic root of 55509260 is about 381.4653943659.

The spelling of 55509260 in words is "fifty-five million, five hundred nine thousand, two hundred sixty".