1529531 has 2 divisors, whose sum is σ = 1529532. Its totient is φ = 1529530.

The previous prime is 1529513. The next prime is 1529533. The reversal of 1529531 is 1359251.

Together with previous prime (1529513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1529531 is a prime.

It is a super-2 number, since 2×1529531² = 4678930159922, which contains 22 as substring.

Together with 1529533, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1529531.

It is not a weakly prime, because it can be changed into another prime (1529533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 764765 + 764766.

It is an arithmetic number, because the mean of its divisors is an integer number (764766).

2^1529531 is an apocalyptic number.

1529531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1529531 is an equidigital number, since it uses as much as digits as its factorization.

1529531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1350, while the sum is 26.

The square root of 1529531 is about 1236.7420911411. The cubic root of 1529531 is about 115.2177600496.

The spelling of 1529531 in words is "one million, five hundred twenty-nine thousand, five hundred thirty-one".