50018407 has 4 divisors (see below), whose sum is σ = 51631936. Its totient is φ = 48404880.

The previous prime is 50018389. The next prime is 50018411. The reversal of 50018407 is 70481005.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50018407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50018477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 806718 + ... + 806779.

It is an arithmetic number, because the mean of its divisors is an integer number (12907984).

Almost surely, 2^50018407 is an apocalyptic number.

50018407 is a deficient number, since it is larger than the sum of its proper divisors (1613529).

50018407 is a wasteful number, since it uses less digits than its factorization.

50018407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613528.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 50018407 is about 7072.3692635495. The cubic root of 50018407 is about 368.4483522961.

The spelling of 50018407 in words is "fifty million, eighteen thousand, four hundred seven".