50913865 has 16 divisors (see below), whose sum is σ = 61992000. Its totient is φ = 40139712.

The previous prime is 50913859. The next prime is 50913869. The reversal of 50913865 is 56831905.

It is a cyclic number.

It is not a de Polignac number, because 50913865 - 2¹⁵ = 50881097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50913869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145711 + ... + 146059.

It is an arithmetic number, because the mean of its divisors is an integer number (3874500).

Almost surely, 2^50913865 is an apocalyptic number.

It is an amenable number.

50913865 is a deficient number, since it is larger than the sum of its proper divisors (11078135).

50913865 is a wasteful number, since it uses less digits than its factorization.

50913865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 50913865 is about 7135.3952238121. The cubic root of 50913865 is about 370.6340843806.

The spelling of 50913865 in words is "fifty million, nine hundred thirteen thousand, eight hundred sixty-five".