55720562 has 4 divisors (see below), whose sum is σ = 83580846. Its totient is φ = 27860280.

The previous prime is 55720549. The next prime is 55720619. The reversal of 55720562 is 26502755.

55720562 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 43811161 + 11909401 = 6619^2 + 3451^2 .

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 as a sum of consecutive naturals, namely, 13930139 + ... + 13930142.

Almost surely, 2^55720562 is an apocalyptic number.

55720562 is a deficient number, since it is larger than the sum of its proper divisors (27860284).

55720562 is a wasteful number, since it uses less digits than its factorization.

55720562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27860283.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 55720562 is about 7464.6206869472. The cubic root of 55720562 is about 381.9488112471.

The spelling of 55720562 in words is "fifty-five million, seven hundred twenty thousand, five hundred sixty-two".