90774133 has 2 divisors, whose sum is σ = 90774134. Its totient is φ = 90774132.

The previous prime is 90774109. The next prime is 90774137. The reversal of 90774133 is 33147709.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90763729 + 10404 = 9527^2 + 102^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90774133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90774137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45387066 + 45387067.

It is an arithmetic number, because the mean of its divisors is an integer number (45387067).

Almost surely, 2^90774133 is an apocalyptic number.

It is an amenable number.

90774133 is a deficient number, since it is larger than the sum of its proper divisors (1).

90774133 is an equidigital number, since it uses as much as digits as its factorization.

90774133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 90774133 is about 9527.5460114344. The cubic root of 90774133 is about 449.4216982865.

The spelling of 90774133 in words is "ninety million, seven hundred seventy-four thousand, one hundred thirty-three".