1513257 has 8 divisors (see below), whose sum is σ = 2023680. Its totient is φ = 1005840.

The previous prime is 1513229. The next prime is 1513271. The reversal of 1513257 is 7523151.

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

It is not a de Polignac number, because 1513257 - 2¹⁰ = 1512233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1513207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032 + ... + 2022.

It is an arithmetic number, because the mean of its divisors is an integer number (252960).

2^1513257 is an apocalyptic number.

It is an amenable number.

1513257 is a deficient number, since it is larger than the sum of its proper divisors (510423).

1513257 is an equidigital number, since it uses as much as digits as its factorization.

1513257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503.

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

The square root of 1513257 is about 1230.1451133911. The cubic root of 1513257 is about 114.8076684328.

It can be divided in two parts, 1513 and 257, that added together give a triangular number (1770 = T₅₉).

The spelling of 1513257 in words is "one million, five hundred thirteen thousand, two hundred fifty-seven".