90613511 has 2 divisors, whose sum is σ = 90613512. Its totient is φ = 90613510.

The previous prime is 90613483. The next prime is 90613531. The reversal of 90613511 is 11531609.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90613511 - 2⁶ = 90613447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90613531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45306755 + 45306756.

It is an arithmetic number, because the mean of its divisors is an integer number (45306756).

Almost surely, 2^90613511 is an apocalyptic number.

90613511 is a deficient number, since it is larger than the sum of its proper divisors (1).

90613511 is an equidigital number, since it uses as much as digits as its factorization.

90613511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 90613511 is about 9519.1129313608. The cubic root of 90613511 is about 449.1564625521.

The spelling of 90613511 in words is "ninety million, six hundred thirteen thousand, five hundred eleven".