1497491 has 4 divisors (see below), whose sum is σ = 1504152. Its totient is φ = 1490832.

The previous prime is 1497439. The next prime is 1497493. The reversal of 1497491 is 1947941.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1497491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1497493) 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, 2981 + ... + 3446.

It is an arithmetic number, because the mean of its divisors is an integer number (376038).

2^1497491 is an apocalyptic number.

1497491 is a deficient number, since it is larger than the sum of its proper divisors (6661).

1497491 is an equidigital number, since it uses as much as digits as its factorization.

1497491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6660.

The product of its digits is 9072, while the sum is 35.

The square root of 1497491 is about 1223.7201477462. The cubic root of 1497491 is about 114.4075644582.

The spelling of 1497491 in words is "one million, four hundred ninety-seven thousand, four hundred ninety-one".