1521418 has 16 divisors (see below), whose sum is σ = 2405376. Its totient is φ = 720720.

The previous prime is 1521397. The next prime is 1521479. The reversal of 1521418 is 8141251.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3055 + ... + 3517.

It is an arithmetic number, because the mean of its divisors is an integer number (150336).

2^1521418 is an apocalyptic number.

1521418 is a deficient number, since it is larger than the sum of its proper divisors (883958).

1521418 is a wasteful number, since it uses less digits than its factorization.

1521418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549.

The product of its digits is 320, while the sum is 22.

The square root of 1521418 is about 1233.4577414731. The cubic root of 1521418 is about 115.0136845719.

Adding to 1521418 its reverse (8141251), we get a palindrome (9662669).

The spelling of 1521418 in words is "one million, five hundred twenty-one thousand, four hundred eighteen".