90611953 has 2 divisors, whose sum is σ = 90611954. Its totient is φ = 90611952.

The previous prime is 90611947. The next prime is 90611981. The reversal of 90611953 is 35911609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82955664 + 7656289 = 9108^2 + 2767^2 .

It is a cyclic number.

It is not a de Polignac number, because 90611953 - 2¹⁷ = 90480881 is a prime.

It is not a weakly prime, because it can be changed into another prime (90611153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45305976 + 45305977.

It is an arithmetic number, because the mean of its divisors is an integer number (45305977).

Almost surely, 2^90611953 is an apocalyptic number.

It is an amenable number.

90611953 is a deficient number, since it is larger than the sum of its proper divisors (1).

90611953 is an equidigital number, since it uses as much as digits as its factorization.

90611953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 90611953 is about 9519.0310956525. The cubic root of 90611953 is about 449.1538882863.

The spelling of 90611953 in words is "ninety million, six hundred eleven thousand, nine hundred fifty-three".