90514561 has 2 divisors, whose sum is σ = 90514562. Its totient is φ = 90514560.

The previous prime is 90514549. The next prime is 90514573. The reversal of 90514561 is 16541509.

It is a balanced prime because it is at equal distance from previous prime (90514549) and next prime (90514573).

It can be written as a sum of positive squares in only one way, i.e., 83832336 + 6682225 = 9156^2 + 2585^2 .

It is a cyclic number.

It is not a de Polignac number, because 90514561 - 2⁹ = 90514049 is a prime.

It is not a weakly prime, because it can be changed into another prime (90514531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45257280 + 45257281.

It is an arithmetic number, because the mean of its divisors is an integer number (45257281).

Almost surely, 2^90514561 is an apocalyptic number.

It is an amenable number.

90514561 is a deficient number, since it is larger than the sum of its proper divisors (1).

90514561 is an equidigital number, since it uses as much as digits as its factorization.

90514561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 90514561 is about 9513.9140736082. The cubic root of 90514561 is about 448.9929099761.

The spelling of 90514561 in words is "ninety million, five hundred fourteen thousand, five hundred sixty-one".