1513491 has 16 divisors (see below), whose sum is σ = 2333184. Its totient is φ = 854784.

The previous prime is 1513489. The next prime is 1513511. The reversal of 1513491 is 1943151.

It is not a de Polignac number, because 1513491 - 2¹ = 1513489 is a prime.

1513491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1513441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1666 + ... + 2408.

It is an arithmetic number, because the mean of its divisors is an integer number (145824).

2^1513491 is an apocalyptic number.

1513491 is a deficient number, since it is larger than the sum of its proper divisors (819693).

1513491 is an equidigital number, since it uses as much as digits as its factorization.

1513491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850.

The product of its digits is 540, while the sum is 24.

The square root of 1513491 is about 1230.2402204448. The cubic root of 1513491 is about 114.8135858259.

It can be divided in two parts, 15134 and 91, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 1513491 in words is "one million, five hundred thirteen thousand, four hundred ninety-one".