50975681 has 4 divisors (see below), whose sum is σ = 51674052. Its totient is φ = 50277312.

The previous prime is 50975653. The next prime is 50975719. The reversal of 50975681 is 18657905.

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 38130625 + 12845056 = 6175^2 + 3584^2 .

It is a cyclic number.

It is not a de Polignac number, because 50975681 - 2¹⁴ = 50959297 is a prime.

It is a super-2 number, since 2×50975681² = 5197040106827522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50905681) 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, 349076 + ... + 349221.

It is an arithmetic number, because the mean of its divisors is an integer number (12918513).

Almost surely, 2^50975681 is an apocalyptic number.

It is an amenable number.

50975681 is a deficient number, since it is larger than the sum of its proper divisors (698371).

50975681 is an equidigital number, since it uses as much as digits as its factorization.

50975681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698370.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 50975681 is about 7139.7255549496. The cubic root of 50975681 is about 370.7840229122.

The spelling of 50975681 in words is "fifty million, nine hundred seventy-five thousand, six hundred eighty-one".