90361577 has 2 divisors, whose sum is σ = 90361578. Its totient is φ = 90361576.

The previous prime is 90361541. The next prime is 90361603. The reversal of 90361577 is 77516309.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56010256 + 34351321 = 7484^2 + 5861^2 .

It is a cyclic number.

It is not a de Polignac number, because 90361577 - 2¹⁰ = 90360553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90361577.

It is not a weakly prime, because it can be changed into another prime (90361177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45180788 + 45180789.

It is an arithmetic number, because the mean of its divisors is an integer number (45180789).

Almost surely, 2^90361577 is an apocalyptic number.

It is an amenable number.

90361577 is a deficient number, since it is larger than the sum of its proper divisors (1).

90361577 is an equidigital number, since it uses as much as digits as its factorization.

90361577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 90361577 is about 9505.8706597555. The cubic root of 90361577 is about 448.7398108605.

The spelling of 90361577 in words is "ninety million, three hundred sixty-one thousand, five hundred seventy-seven".