15172530 has 32 divisors (see below), whose sum is σ = 37015488. Its totient is φ = 3979200.

The previous prime is 15172519. The next prime is 15172541. The reversal of 15172530 is 3527151.

It is an interprime number because it is at equal distance from previous prime (15172519) and next prime (15172541).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15172530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2316 + ... + 5975.

It is an arithmetic number, because the mean of its divisors is an integer number (1156734).

Almost surely, 2^15172530 is an apocalyptic number.

15172530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15172530 is an abundant number, since it is smaller than the sum of its proper divisors (21842958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15172530 is a wasteful number, since it uses less digits than its factorization.

15172530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8362.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 15172530 is about 3895.1931916145. The cubic root of 15172530 is about 247.5631509091.

Adding to 15172530 its reverse (3527151), we get a palindrome (18699681).

The spelling of 15172530 in words is "fifteen million, one hundred seventy-two thousand, five hundred thirty".