90501539 has 2 divisors, whose sum is σ = 90501540. Its totient is φ = 90501538.

The previous prime is 90501533. The next prime is 90501559. The reversal of 90501539 is 93510509.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90501539 is a prime.

It is a super-2 number, since 2×90501539² = 16381057122737042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90501533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45250769 + 45250770.

It is an arithmetic number, because the mean of its divisors is an integer number (45250770).

Almost surely, 2^90501539 is an apocalyptic number.

90501539 is a deficient number, since it is larger than the sum of its proper divisors (1).

90501539 is an equidigital number, since it uses as much as digits as its factorization.

90501539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 90501539 is about 9513.2296829205. The cubic root of 90501539 is about 448.9713772856.

The spelling of 90501539 in words is "ninety million, five hundred one thousand, five hundred thirty-nine".