90519811 has 2 divisors, whose sum is σ = 90519812. Its totient is φ = 90519810.

The previous prime is 90519787. The next prime is 90519823. The reversal of 90519811 is 11891509.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90519811 - 2¹⁵ = 90487043 is a prime.

It is not a weakly prime, because it can be changed into another prime (90519851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45259905 + 45259906.

It is an arithmetic number, because the mean of its divisors is an integer number (45259906).

Almost surely, 2^90519811 is an apocalyptic number.

90519811 is a deficient number, since it is larger than the sum of its proper divisors (1).

90519811 is an equidigital number, since it uses as much as digits as its factorization.

90519811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 34.

The square root of 90519811 is about 9514.1899812858. The cubic root of 90519811 is about 449.0015905949.

The spelling of 90519811 in words is "ninety million, five hundred nineteen thousand, eight hundred eleven".