50220691 has 4 divisors (see below), whose sum is σ = 50248384. Its totient is φ = 50193000.

The previous prime is 50220679. The next prime is 50220739. The reversal of 50220691 is 19602205.

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 50220691 - 2⁷ = 50220563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50220631) 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, 10920 + ... + 14821.

It is an arithmetic number, because the mean of its divisors is an integer number (12562096).

Almost surely, 2^50220691 is an apocalyptic number.

50220691 is a deficient number, since it is larger than the sum of its proper divisors (27693).

50220691 is a wasteful number, since it uses less digits than its factorization.

50220691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27692.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 50220691 is about 7086.6558403806. The cubic root of 50220691 is about 368.9443760820.

Adding to 50220691 its reverse (19602205), we get a palindrome (69822896).

The spelling of 50220691 in words is "fifty million, two hundred twenty thousand, six hundred ninety-one".