15525230 has 32 divisors (see below), whose sum is σ = 33329664. Its totient is φ = 5090976.

The previous prime is 15525229. The next prime is 15525247. The reversal of 15525230 is 3252551.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 15525196 and 15525205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3212 + ... + 6431.

It is an arithmetic number, because the mean of its divisors is an integer number (1041552).

Almost surely, 2^15525230 is an apocalyptic number.

15525230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15525230 is an abundant number, since it is smaller than the sum of its proper divisors (17804434).

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

15525230 is a wasteful number, since it uses less digits than its factorization.

15525230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9680.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 15525230 is about 3940.2068473622. The cubic root of 15525230 is about 249.4667567485.

Adding to 15525230 its reverse (3252551), we get a palindrome (18777781).

The spelling of 15525230 in words is "fifteen million, five hundred twenty-five thousand, two hundred thirty".