50451013 has 4 divisors (see below), whose sum is σ = 50577228. Its totient is φ = 50324800.

The previous prime is 50451007. The next prime is 50451031. The reversal of 50451013 is 31015405.

50451013 = 5022² + 5023².

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 25220484 + 25230529 = 5022^2 + 5023^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50451013 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 (50451073) 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, 62506 + ... + 63307.

It is an arithmetic number, because the mean of its divisors is an integer number (12644307).

Almost surely, 2^50451013 is an apocalyptic number.

50451013 is the 5023-rd centered square number.

It is an amenable number.

50451013 is a deficient number, since it is larger than the sum of its proper divisors (126215).

50451013 is a wasteful number, since it uses less digits than its factorization.

50451013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126214.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 50451013 is about 7102.8876522158. The cubic root of 50451013 is about 369.5075332807.

Adding to 50451013 its reverse (31015405), we get a palindrome (81466418).

The spelling of 50451013 in words is "fifty million, four hundred fifty-one thousand, thirteen".