1521874 has 12 divisors (see below), whose sum is σ = 2425914. Its totient is φ = 715904.

The previous prime is 1521869. The next prime is 1521893. The reversal of 1521874 is 4781251.

It can be written as a sum of positive squares in 3 ways, for example, as 1404225 + 117649 = 1185^2 + 343^2 .

It is a super-2 number, since 2×1521874² = 4632200943752, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 739 + ... + 1894.

2^1521874 is an apocalyptic number.

1521874 is a deficient number, since it is larger than the sum of its proper divisors (904040).

1521874 is a wasteful number, since it uses less digits than its factorization.

1521874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669 (or 2652 counting only the distinct ones).

The product of its digits is 2240, while the sum is 28.

The square root of 1521874 is about 1233.6425738438. The cubic root of 1521874 is about 115.0251740730.

The spelling of 1521874 in words is "one million, five hundred twenty-one thousand, eight hundred seventy-four".