2152172475 has 18 divisors (see below), whose sum is σ = 3854780436. Its totient is φ = 1147825200.

The previous prime is 2152172461. The next prime is 2152172483. The reversal of 2152172475 is 5742712512.

2152172475 is a `hidden beast` number, since 2 + 15 + 2 + 172 + 475 = 666.

It is not a de Polignac number, because 2152172475 - 2⁹ = 2152171963 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4782381 + ... + 4782830.

Almost surely, 2^2152172475 is an apocalyptic number.

2152172475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2152172475 is a deficient number, since it is larger than the sum of its proper divisors (1702607961).

2152172475 is a wasteful number, since it uses less digits than its factorization.

2152172475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9565227 (or 9565219 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 2152172475 is about 46391.5129630410. The cubic root of 2152172475 is about 1291.0974526053.

Adding to 2152172475 its reverse (5742712512), we get a palindrome (7894884987).

The spelling of 2152172475 in words is "two billion, one hundred fifty-two million, one hundred seventy-two thousand, four hundred seventy-five".