50518665 has 24 divisors (see below), whose sum is σ = 87764040. Its totient is φ = 26882304.

The previous prime is 50518627. The next prime is 50518673. The reversal of 50518665 is 56681505.

It can be written as a sum of positive squares in 4 ways, for example, as 9216 + 50509449 = 96^2 + 7107^2 .

It is not a de Polignac number, because 50518665 - 2⁷ = 50518537 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 24619 + ... + 26591.

It is an arithmetic number, because the mean of its divisors is an integer number (3656835).

Almost surely, 2^50518665 is an apocalyptic number.

It is an amenable number.

50518665 is a deficient number, since it is larger than the sum of its proper divisors (37245375).

50518665 is a wasteful number, since it uses less digits than its factorization.

50518665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553 (or 2550 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 50518665 is about 7107.6483452686. The cubic root of 50518665 is about 369.6726225218.

The spelling of 50518665 in words is "fifty million, five hundred eighteen thousand, six hundred sixty-five".