50402500061 has 4 divisors (see below), whose sum is σ = 50405258172. Its totient is φ = 50399741952.

The previous prime is 50402500037. The next prime is 50402500067. The reversal of 50402500061 is 16000520405.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16000520405 = 5 ⋅3200104081.

It can be written as a sum of positive squares in 2 ways, for example, as 48050832025 + 2351668036 = 219205^2 + 48494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50402500061 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 (50402500067) 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, 1351460 + ... + 1388253.

It is an arithmetic number, because the mean of its divisors is an integer number (12601314543).

Almost surely, 2^50402500061 is an apocalyptic number.

It is an amenable number.

50402500061 is a deficient number, since it is larger than the sum of its proper divisors (2758111).

50402500061 is a wasteful number, since it uses less digits than its factorization.

50402500061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758110.

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 50402500061 in words is "fifty billion, four hundred two million, five hundred thousand, sixty-one".