50720618 has 12 divisors (see below), whose sum is σ = 82384038. Its totient is φ = 23409360.

The previous prime is 50720617. The next prime is 50720647. The reversal of 50720618 is 81602705.

It can be written as a sum of positive squares in 3 ways, for example, as 35844169 + 14876449 = 5987^2 + 3857^2 .

It is not an unprimeable number, because it can be changed into a prime (50720617) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74693 + ... + 75368.

Almost surely, 2^50720618 is an apocalyptic number.

50720618 is a deficient number, since it is larger than the sum of its proper divisors (31663420).

50720618 is a wasteful number, since it uses less digits than its factorization.

50720618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150089 (or 150076 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 50720618 is about 7121.8409136964. The cubic root of 50720618 is about 370.1645676502.

The spelling of 50720618 in words is "fifty million, seven hundred twenty thousand, six hundred eighteen".