90413501 has 2 divisors, whose sum is σ = 90413502. Its totient is φ = 90413500.

The previous prime is 90413471. The next prime is 90413507. The reversal of 90413501 is 10531409.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57912100 + 32501401 = 7610^2 + 5701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90413501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90413507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45206750 + 45206751.

It is an arithmetic number, because the mean of its divisors is an integer number (45206751).

Almost surely, 2^90413501 is an apocalyptic number.

It is an amenable number.

90413501 is a deficient number, since it is larger than the sum of its proper divisors (1).

90413501 is an equidigital number, since it uses as much as digits as its factorization.

90413501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 90413501 is about 9508.6014218706. The cubic root of 90413501 is about 448.8257467385.

The spelling of 90413501 in words is "ninety million, four hundred thirteen thousand, five hundred one".