9125531 has 2 divisors, whose sum is σ = 9125532. Its totient is φ = 9125530.

The previous prime is 9125521. The next prime is 9125561. The reversal of 9125531 is 1355219.

It is a weak prime.

It is an emirp because it is prime and its reverse (1355219) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9125531 is a prime.

It is a super-2 number, since 2×9125531² = 166550632063922, which contains 22 as substring.

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 9125531.

It is not a weakly prime, because it can be changed into another prime (9125521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4562765 + 4562766.

It is an arithmetic number, because the mean of its divisors is an integer number (4562766).

Almost surely, 2^9125531 is an apocalyptic number.

9125531 is a deficient number, since it is larger than the sum of its proper divisors (1).

9125531 is an equidigital number, since it uses as much as digits as its factorization.

9125531 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 9125531 is about 3020.8493838654. The cubic root of 9125531 is about 208.9710131269.

The spelling of 9125531 in words is "nine million, one hundred twenty-five thousand, five hundred thirty-one".