50979691 has 4 divisors (see below), whose sum is σ = 58262512. Its totient is φ = 43696872.

The previous prime is 50979689. The next prime is 50979739. The reversal of 50979691 is 19697905.

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

It is a cyclic number.

It is not a de Polignac number, because 50979691 - 2¹ = 50979689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50979671) 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, 3641400 + ... + 3641413.

It is an arithmetic number, because the mean of its divisors is an integer number (14565628).

Almost surely, 2^50979691 is an apocalyptic number.

50979691 is a deficient number, since it is larger than the sum of its proper divisors (7282821).

50979691 is an equidigital number, since it uses as much as digits as its factorization.

50979691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7282820.

The product of its (nonzero) digits is 153090, while the sum is 46.

The square root of 50979691 is about 7140.0063725462. The cubic root of 50979691 is about 370.7937452276.

It can be divided in two parts, 509 and 79691, that added together give a triangular number (80200 = T₄₀₀).

The spelling of 50979691 in words is "fifty million, nine hundred seventy-nine thousand, six hundred ninety-one".