1521274 has 4 divisors (see below), whose sum is σ = 2281914. Its totient is φ = 760636.

The previous prime is 1521269. The next prime is 1521281. The reversal of 1521274 is 4721251.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4721251 = 1613 ⋅2927.

It can be written as a sum of positive squares in only one way, i.e., 889249 + 632025 = 943^2 + 795^2 .

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380317 + ... + 380320.

2^1521274 is an apocalyptic number.

1521274 is a deficient number, since it is larger than the sum of its proper divisors (760640).

1521274 is an equidigital number, since it uses as much as digits as its factorization.

1521274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760639.

The product of its digits is 560, while the sum is 22.

The square root of 1521274 is about 1233.3993676016. The cubic root of 1521274 is about 115.0100558314.

The spelling of 1521274 in words is "one million, five hundred twenty-one thousand, two hundred seventy-four".