1491215 has 16 divisors (see below), whose sum is σ = 2056320. Its totient is φ = 1026720.

The previous prime is 1491199. The next prime is 1491227. The reversal of 1491215 is 5121941.

It is a happy number.

It is not a de Polignac number, because 1491215 - 2⁴ = 1491199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332 + ... + 1758.

It is an arithmetic number, because the mean of its divisors is an integer number (128520).

2^1491215 is an apocalyptic number.

1491215 is a deficient number, since it is larger than the sum of its proper divisors (565105).

1491215 is a wasteful number, since it uses less digits than its factorization.

1491215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462.

The product of its digits is 360, while the sum is 23.

The square root of 1491215 is about 1221.1531435492. The cubic root of 1491215 is about 114.2475129018.

The spelling of 1491215 in words is "one million, four hundred ninety-one thousand, two hundred fifteen".