50875661 has 4 divisors (see below), whose sum is σ = 51156924. Its totient is φ = 50594400.

The previous prime is 50875621. The next prime is 50875663. The reversal of 50875661 is 16657805.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16657805 = 5 ⋅3331561.

It can be written as a sum of positive squares in 2 ways, for example, as 9672100 + 41203561 = 3110^2 + 6419^2 .

It is a cyclic number.

It is not a de Polignac number, because 50875661 - 2¹⁸ = 50613517 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 (50875663) 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, 140360 + ... + 140721.

It is an arithmetic number, because the mean of its divisors is an integer number (12789231).

Almost surely, 2^50875661 is an apocalyptic number.

It is an amenable number.

50875661 is a deficient number, since it is larger than the sum of its proper divisors (281263).

50875661 is a wasteful number, since it uses less digits than its factorization.

50875661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281262.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 50875661 is about 7132.7176447691. The cubic root of 50875661 is about 370.5413575259.

The spelling of 50875661 in words is "fifty million, eight hundred seventy-five thousand, six hundred sixty-one".