1491297 has 8 divisors (see below), whose sum is σ = 2074944. Its totient is φ = 950928.

The previous prime is 1491271. The next prime is 1491299. The reversal of 1491297 is 7921941.

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

It is not a de Polignac number, because 1491297 - 2⁶ = 1491233 is a prime.

1491297 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1491299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10738 + ... + 10875.

It is an arithmetic number, because the mean of its divisors is an integer number (259368).

2^1491297 is an apocalyptic number.

It is an amenable number.

1491297 is a deficient number, since it is larger than the sum of its proper divisors (583647).

1491297 is a wasteful number, since it uses less digits than its factorization.

1491297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21639.

The product of its digits is 4536, while the sum is 33.

The square root of 1491297 is about 1221.1867179101. The cubic root of 1491297 is about 114.2496069715.

The spelling of 1491297 in words is "one million, four hundred ninety-one thousand, two hundred ninety-seven".