90490953253 has 2 divisors, whose sum is σ = 90490953254. Its totient is φ = 90490953252.

The previous prime is 90490953173. The next prime is 90490953263. The reversal of 90490953253 is 35235909409.

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., 89258732644 + 1232220609 = 298762^2 + 35103^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90490953253 is a prime.

It is a super-2 number, since 2×90490953253² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90490953197 and 90490953206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90490953263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45245476626 + 45245476627.

It is an arithmetic number, because the mean of its divisors is an integer number (45245476627).

Almost surely, 2^90490953253 is an apocalyptic number.

It is an amenable number.

90490953253 is a deficient number, since it is larger than the sum of its proper divisors (1).

90490953253 is an equidigital number, since it uses as much as digits as its factorization.

90490953253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1312200, while the sum is 49.

The spelling of 90490953253 in words is "ninety billion, four hundred ninety million, nine hundred fifty-three thousand, two hundred fifty-three".