1513971 has 10 divisors (see below), whose sum is σ = 2261732. Its totient is φ = 1009260.

The previous prime is 1513957. The next prime is 1513973. The reversal of 1513971 is 1793151.

It is a happy number.

It is not a de Polignac number, because 1513971 - 2¹⁰ = 1512947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1513973) 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 9 ways as a sum of consecutive naturals, for example, 9265 + ... + 9426.

2^1513971 is an apocalyptic number.

1513971 is a deficient number, since it is larger than the sum of its proper divisors (747761).

1513971 is an equidigital number, since it uses as much as digits as its factorization.

1513971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18703 (or 18694 counting only the distinct ones).

The product of its digits is 945, while the sum is 27.

The square root of 1513971 is about 1230.4352888307. The cubic root of 1513971 is about 114.8257221598.

The spelling of 1513971 in words is "one million, five hundred thirteen thousand, nine hundred seventy-one".