15040257 has 16 divisors (see below), whose sum is σ = 21507840. Its totient is φ = 9315072.

The previous prime is 15040253. The next prime is 15040273. The reversal of 15040257 is 75204051.

It is not a de Polignac number, because 15040257 - 2² = 15040253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15040253) 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 15 ways as a sum of consecutive naturals, for example, 2163 + ... + 5895.

It is an arithmetic number, because the mean of its divisors is an integer number (1344240).

Almost surely, 2^15040257 is an apocalyptic number.

15040257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

15040257 is a deficient number, since it is larger than the sum of its proper divisors (6467583).

15040257 is a wasteful number, since it uses less digits than its factorization.

15040257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3832.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 15040257 is about 3878.1770201991. The cubic root of 15040257 is about 246.8416376858.

The spelling of 15040257 in words is "fifteen million, forty thousand, two hundred fifty-seven".