50513861 has 4 divisors (see below), whose sum is σ = 51588672. Its totient is φ = 49439052.

The previous prime is 50513833. The next prime is 50513867. The reversal of 50513861 is 16831505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50513861 - 2⁶ = 50513797 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 (50513867) 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, 537335 + ... + 537428.

It is an arithmetic number, because the mean of its divisors is an integer number (12897168).

Almost surely, 2^50513861 is an apocalyptic number.

It is an amenable number.

50513861 is a deficient number, since it is larger than the sum of its proper divisors (1074811).

50513861 is a wasteful number, since it uses less digits than its factorization.

50513861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074810.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 50513861 is about 7107.3103914209. The cubic root of 50513861 is about 369.6609043211.

The spelling of 50513861 in words is "fifty million, five hundred thirteen thousand, eight hundred sixty-one".