1513481 has 4 divisors (see below), whose sum is σ = 1565700. Its totient is φ = 1461264.

The previous prime is 1513453. The next prime is 1513487. The reversal of 1513481 is 1843151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 259081 + 1254400 = 509^2 + 1120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1513481 - 2⁶ = 1513417 is a prime.

It is a super-2 number, since 2×1513481² = 4581249474722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1513487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26066 + ... + 26123.

It is an arithmetic number, because the mean of its divisors is an integer number (391425).

2^1513481 is an apocalyptic number.

It is an amenable number.

1513481 is a deficient number, since it is larger than the sum of its proper divisors (52219).

1513481 is an equidigital number, since it uses as much as digits as its factorization.

1513481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52218.

The product of its digits is 480, while the sum is 23.

The square root of 1513481 is about 1230.2361561912. The cubic root of 1513481 is about 114.8133329584.

The spelling of 1513481 in words is "one million, five hundred thirteen thousand, four hundred eighty-one".