152172505 has 8 divisors (see below), whose sum is σ = 185702400. Its totient is φ = 119674416.

The previous prime is 152172499. The next prime is 152172523. The reversal of 152172505 is 505271251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 152172505 - 2³ = 152172497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257625 + ... + 258214.

It is an arithmetic number, because the mean of its divisors is an integer number (23212800).

Almost surely, 2^152172505 is an apocalyptic number.

It is an amenable number.

152172505 is a deficient number, since it is larger than the sum of its proper divisors (33529895).

152172505 is an equidigital number, since it uses as much as digits as its factorization.

152172505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515903.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 152172505 is about 12335.8220236837. The cubic root of 152172505 is about 533.8821449197.

The spelling of 152172505 in words is "one hundred fifty-two million, one hundred seventy-two thousand, five hundred five".