7000172491 has 12 divisors (see below), whose sum is σ = 7584042648. Its totient is φ = 6458310144.

The previous prime is 7000172483. The next prime is 7000172507. The reversal of 7000172491 is 1942710007.

It is not a de Polignac number, because 7000172491 - 2³ = 7000172483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7000172591) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 347296 + ... + 366898.

It is an arithmetic number, because the mean of its divisors is an integer number (632003554).

Almost surely, 2^7000172491 is an apocalyptic number.

7000172491 is a deficient number, since it is larger than the sum of its proper divisors (583870157).

7000172491 is a wasteful number, since it uses less digits than its factorization.

7000172491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21742 (or 21729 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 7000172491 is about 83667.0334779476. The cubic root of 7000172491 is about 1912.9468951868.

Adding to 7000172491 its reverse (1942710007), we get a palindrome (8942882498).

The spelling of 7000172491 in words is "seven billion, one hundred seventy-two thousand, four hundred ninety-one".