90763531 has 2 divisors, whose sum is σ = 90763532. Its totient is φ = 90763530.

The previous prime is 90763529. The next prime is 90763573. The reversal of 90763531 is 13536709.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90763531 - 2¹ = 90763529 is a prime.

It is a super-2 number, since 2×90763531² = 16476037119175922, which contains 22 as substring.

Together with 90763529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (90763501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45381765 + 45381766.

It is an arithmetic number, because the mean of its divisors is an integer number (45381766).

Almost surely, 2^90763531 is an apocalyptic number.

90763531 is a deficient number, since it is larger than the sum of its proper divisors (1).

90763531 is an equidigital number, since it uses as much as digits as its factorization.

90763531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 90763531 is about 9526.9896084755. The cubic root of 90763531 is about 449.4042008115.

The spelling of 90763531 in words is "ninety million, seven hundred sixty-three thousand, five hundred thirty-one".