15897255 has 64 divisors (see below), whose sum is σ = 29859840. Its totient is φ = 7145600.

The previous prime is 15897253. The next prime is 15897293. The reversal of 15897255 is 55279851.

It is not a de Polignac number, because 15897255 - 2¹ = 15897253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15897251) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 223870 + ... + 223940.

It is an arithmetic number, because the mean of its divisors is an integer number (466560).

Almost surely, 2^15897255 is an apocalyptic number.

15897255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15897255 is a deficient number, since it is larger than the sum of its proper divisors (13962585).

15897255 is a wasteful number, since it uses less digits than its factorization.

15897255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172.

The product of its digits is 126000, while the sum is 42.

The square root of 15897255 is about 3987.1361903000. The cubic root of 15897255 is about 251.4436738426.

The spelling of 15897255 in words is "fifteen million, eight hundred ninety-seven thousand, two hundred fifty-five".