55297660 has 24 divisors (see below), whose sum is σ = 126682416. Its totient is φ = 20108160.

The previous prime is 55297639. The next prime is 55297661. The reversal of 55297660 is 6679255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55297661) 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, 125457 + ... + 125896.

It is an arithmetic number, because the mean of its divisors is an integer number (5278434).

Almost surely, 2^55297660 is an apocalyptic number.

It is an amenable number.

55297660 is an abundant number, since it is smaller than the sum of its proper divisors (71384756).

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

55297660 is a wasteful number, since it uses less digits than its factorization.

55297660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251373 (or 251371 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 55297660 is about 7436.2396411089. The cubic root of 55297660 is about 380.9800647689.

The spelling of 55297660 in words is "fifty-five million, two hundred ninety-seven thousand, six hundred sixty".