50486813 has 4 divisors (see below), whose sum is σ = 54370428. Its totient is φ = 46603200.

The previous prime is 50486809. The next prime is 50486861. The reversal of 50486813 is 31868405.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14462809 + 36024004 = 3803^2 + 6002^2 .

It is a cyclic number.

It is not a de Polignac number, because 50486813 - 2² = 50486809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50486113) 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, 1941788 + ... + 1941813.

It is an arithmetic number, because the mean of its divisors is an integer number (13592607).

Almost surely, 2^50486813 is an apocalyptic number.

It is an amenable number.

50486813 is a deficient number, since it is larger than the sum of its proper divisors (3883615).

50486813 is a wasteful number, since it uses less digits than its factorization.

50486813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3883614.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 50486813 is about 7105.4073071148. The cubic root of 50486813 is about 369.5949133694.

The spelling of 50486813 in words is "fifty million, four hundred eighty-six thousand, eight hundred thirteen".