2450172991 has 32 divisors (see below), whose sum is σ = 3006761472. Its totient is φ = 1948907520.

The previous prime is 2450172983. The next prime is 2450173043. The reversal of 2450172991 is 1992710542.

It is a happy number.

It is not a de Polignac number, because 2450172991 - 2³ = 2450172983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2450172931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4290736 + ... + 4291306.

It is an arithmetic number, because the mean of its divisors is an integer number (93961296).

Almost surely, 2^2450172991 is an apocalyptic number.

2450172991 is a deficient number, since it is larger than the sum of its proper divisors (556588481).

2450172991 is a wasteful number, since it uses less digits than its factorization.

2450172991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 2450172991 is about 49499.2221252011. Note that the first 3 decimals coincide. The cubic root of 2450172991 is about 1348.1314782737.

The spelling of 2450172991 in words is "two billion, four hundred fifty million, one hundred seventy-two thousand, nine hundred ninety-one".