55707320 has 32 divisors (see below), whose sum is σ = 125852400. Its totient is φ = 22192128.

The previous prime is 55707277. The next prime is 55707329. The reversal of 55707320 is 2370755.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55707329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7571 + ... + 12989.

Almost surely, 2^55707320 is an apocalyptic number.

It is an amenable number.

55707320 is an abundant number, since it is smaller than the sum of its proper divisors (70145080).

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

55707320 is a wasteful number, since it uses less digits than its factorization.

55707320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5687 (or 5683 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 29.

The square root of 55707320 is about 7463.7336501244. The cubic root of 55707320 is about 381.9185521190.

The spelling of 55707320 in words is "fifty-five million, seven hundred seven thousand, three hundred twenty".