11537531 has 2 divisors, whose sum is σ = 11537532. Its totient is φ = 11537530.

The previous prime is 11537527. The next prime is 11537551. The reversal of 11537531 is 13573511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11537531 - 2² = 11537527 is a prime.

It is a super-2 number, since 2×11537531² = 266229243151922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11537531.

It is not a weakly prime, because it can be changed into another prime (11537551) 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, 5768765 + 5768766.

It is an arithmetic number, because the mean of its divisors is an integer number (5768766).

Almost surely, 2^11537531 is an apocalyptic number.

11537531 is a deficient number, since it is larger than the sum of its proper divisors (1).

11537531 is an equidigital number, since it uses as much as digits as its factorization.

11537531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1575, while the sum is 26.

The square root of 11537531 is about 3396.6941281193. The cubic root of 11537531 is about 225.9631534677.

The spelling of 11537531 in words is "eleven million, five hundred thirty-seven thousand, five hundred thirty-one".