50640645 has 16 divisors (see below), whose sum is σ = 88391232. Its totient is φ = 24552960.

The previous prime is 50640613. The next prime is 50640647. The reversal of 50640645 is 54604605.

It is not a de Polignac number, because 50640645 - 2⁵ = 50640613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50640647) 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 15 ways as a sum of consecutive naturals, for example, 153292 + ... + 153621.

It is an arithmetic number, because the mean of its divisors is an integer number (5524452).

Almost surely, 2^50640645 is an apocalyptic number.

50640645 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

50640645 is a deficient number, since it is larger than the sum of its proper divisors (37750587).

50640645 is a wasteful number, since it uses less digits than its factorization.

50640645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306932.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 50640645 is about 7116.2240689849. The cubic root of 50640645 is about 369.9699147683.

The spelling of 50640645 in words is "fifty million, six hundred forty thousand, six hundred forty-five".