50161691 has 16 divisors (see below), whose sum is σ = 54410400. Its totient is φ = 46096128.

The previous prime is 50161681. The next prime is 50161711. The reversal of 50161691 is 19616105.

It is not a de Polignac number, because 50161691 - 2¹⁸ = 49899547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50161681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109535 + ... + 109991.

It is an arithmetic number, because the mean of its divisors is an integer number (3400650).

Almost surely, 2^50161691 is an apocalyptic number.

50161691 is a deficient number, since it is larger than the sum of its proper divisors (4248709).

50161691 is a wasteful number, since it uses less digits than its factorization.

50161691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 50161691 is about 7082.4918637440. The cubic root of 50161691 is about 368.7998390551.

Adding to 50161691 its reverse (19616105), we get a palindrome (69777796).

The spelling of 50161691 in words is "fifty million, one hundred sixty-one thousand, six hundred ninety-one".