55720602 has 32 divisors (see below), whose sum is σ = 141513600. Its totient is φ = 15920064.

The previous prime is 55720549. The next prime is 55720619. The reversal of 55720602 is 20602755.

55720602 is a `hidden beast` number, since 5 + 57 + 2 + 0 + 602 = 666.

55720602 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73327 + ... + 74082.

It is an arithmetic number, because the mean of its divisors is an integer number (4422300).

Almost surely, 2^55720602 is an apocalyptic number.

55720602 is an abundant number, since it is smaller than the sum of its proper divisors (85792998).

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

55720602 is a wasteful number, since it uses less digits than its factorization.

55720602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147427 (or 147421 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 55720602 is about 7464.6233662523. The cubic root of 55720602 is about 381.9489026434.

The spelling of 55720602 in words is "fifty-five million, seven hundred twenty thousand, six hundred two".