7522531 has 2 divisors, whose sum is σ = 7522532. Its totient is φ = 7522530.

The previous prime is 7522519. The next prime is 7522573. The reversal of 7522531 is 1352257.

It is a weak prime.

It is an emirp because it is prime and its reverse (1352257) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7522531 - 2²¹ = 5425379 is a prime.

It is a super-2 number, since 2×7522531² = 113176945291922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7522496 and 7522505.

It is not a weakly prime, because it can be changed into another prime (7522231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3761265 + 3761266.

It is an arithmetic number, because the mean of its divisors is an integer number (3761266).

Almost surely, 2^7522531 is an apocalyptic number.

7522531 is a deficient number, since it is larger than the sum of its proper divisors (1).

7522531 is an equidigital number, since it uses as much as digits as its factorization.

7522531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2100, while the sum is 25.

The square root of 7522531 is about 2742.7232817038. The cubic root of 7522531 is about 195.9391991752.

Adding to 7522531 its reverse (1352257), we get a palindrome (8874788).

The spelling of 7522531 in words is "seven million, five hundred twenty-two thousand, five hundred thirty-one".