1525331 has 2 divisors, whose sum is σ = 1525332. Its totient is φ = 1525330.

The previous prime is 1525297. The next prime is 1525333. The reversal of 1525331 is 1335251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1525331 - 2⁶ = 1525267 is a prime.

It is a super-2 number, since 2×1525331² = 4653269319122, which contains 22 as substring.

Together with 1525333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1525333) by changing a digit.

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 as a sum of consecutive naturals, namely, 762665 + 762666.

It is an arithmetic number, because the mean of its divisors is an integer number (762666).

2^1525331 is an apocalyptic number.

1525331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1525331 is an equidigital number, since it uses as much as digits as its factorization.

1525331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 450, while the sum is 20.

The square root of 1525331 is about 1235.0429142342. The cubic root of 1525331 is about 115.1122030297.

The spelling of 1525331 in words is "one million, five hundred twenty-five thousand, three hundred thirty-one".