50951009 has 6 divisors (see below), whose sum is σ = 51360210. Its totient is φ = 50545040.

The previous prime is 50950943. The next prime is 50951041. The reversal of 50951009 is 90015905.

It can be written as a sum of positive squares in only one way, i.e., 27457600 + 23493409 = 5240^2 + 4847^2 .

It is not a de Polignac number, because 50951009 - 2²⁴ = 34173793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50951059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15677 + ... + 18645.

It is an arithmetic number, because the mean of its divisors is an integer number (8560035).

Almost surely, 2^50951009 is an apocalyptic number.

It is an amenable number.

50951009 is a deficient number, since it is larger than the sum of its proper divisors (409201).

50951009 is an equidigital number, since it uses as much as digits as its factorization.

50951009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3231 (or 3100 counting only the distinct ones).

The product of its (nonzero) digits is 2025, while the sum is 29.

The square root of 50951009 is about 7137.9975483324. The cubic root of 50951009 is about 370.7241939932.

The spelling of 50951009 in words is "fifty million, nine hundred fifty-one thousand, nine".