50691001 has 2 divisors, whose sum is σ = 50691002. Its totient is φ = 50691000.

The previous prime is 50690987. The next prime is 50691019. The reversal of 50691001 is 10019605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33051001 + 17640000 = 5749^2 + 4200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50691001 is a prime.

It is not a weakly prime, because it can be changed into another prime (50691301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25345500 + 25345501.

It is an arithmetic number, because the mean of its divisors is an integer number (25345501).

Almost surely, 2^50691001 is an apocalyptic number.

It is an amenable number.

50691001 is a deficient number, since it is larger than the sum of its proper divisors (1).

50691001 is an equidigital number, since it uses as much as digits as its factorization.

50691001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 50691001 is about 7119.7613021786. The cubic root of 50691001 is about 370.0925042632.

The spelling of 50691001 in words is "fifty million, six hundred ninety-one thousand, one".