90603901 has 2 divisors, whose sum is σ = 90603902. Its totient is φ = 90603900.

The previous prime is 90603889. The next prime is 90603907. The reversal of 90603901 is 10930609.

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., 79388100 + 11215801 = 8910^2 + 3349^2 .

It is a cyclic number.

It is not a de Polignac number, because 90603901 - 2⁹ = 90603389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90603901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90603907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45301950 + 45301951.

It is an arithmetic number, because the mean of its divisors is an integer number (45301951).

Almost surely, 2^90603901 is an apocalyptic number.

It is an amenable number.

90603901 is a deficient number, since it is larger than the sum of its proper divisors (1).

90603901 is an equidigital number, since it uses as much as digits as its factorization.

90603901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 90603901 is about 9518.6081440513. The cubic root of 90603901 is about 449.1405835875.

The spelling of 90603901 in words is "ninety million, six hundred three thousand, nine hundred one".