1521427 has 8 divisors (see below), whose sum is σ = 1643040. Its totient is φ = 1404480.

The previous prime is 1521397. The next prime is 1521479. The reversal of 1521427 is 7241251.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1521427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1521398 and 1521407.

It is not an unprimeable number, because it can be changed into a prime (1521497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474 + ... + 1807.

It is an arithmetic number, because the mean of its divisors is an integer number (205380).

2^1521427 is an apocalyptic number.

1521427 is a deficient number, since it is larger than the sum of its proper divisors (121613).

1521427 is a wasteful number, since it uses less digits than its factorization.

1521427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333.

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

The square root of 1521427 is about 1233.4613897484. The cubic root of 1521427 is about 115.0139113606.

Adding to 1521427 its reverse (7241251), we get a palindrome (8762678).

The spelling of 1521427 in words is "one million, five hundred twenty-one thousand, four hundred twenty-seven".