1491253 has 4 divisors (see below), whose sum is σ = 1569760. Its totient is φ = 1412748.

The previous prime is 1491247. The next prime is 1491271. The reversal of 1491253 is 3521941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1491253 - 2¹³ = 1483061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491233) 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, 39225 + ... + 39262.

It is an arithmetic number, because the mean of its divisors is an integer number (392440).

2^1491253 is an apocalyptic number.

It is an amenable number.

1491253 is a deficient number, since it is larger than the sum of its proper divisors (78507).

1491253 is an equidigital number, since it uses as much as digits as its factorization.

1491253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78506.

The product of its digits is 1080, while the sum is 25.

The square root of 1491253 is about 1221.1687025141. The cubic root of 1491253 is about 114.2484833339.

The spelling of 1491253 in words is "one million, four hundred ninety-one thousand, two hundred fifty-three".