90051853 has 2 divisors, whose sum is σ = 90051854. Its totient is φ = 90051852.

The previous prime is 90051833. The next prime is 90051883. The reversal of 90051853 is 35815009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87272964 + 2778889 = 9342^2 + 1667^2 .

It is an emirp because it is prime and its reverse (35815009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90051853 - 2²¹ = 87954701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90051803) 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, 45025926 + 45025927.

It is an arithmetic number, because the mean of its divisors is an integer number (45025927).

Almost surely, 2^90051853 is an apocalyptic number.

It is an amenable number.

90051853 is a deficient number, since it is larger than the sum of its proper divisors (1).

90051853 is an equidigital number, since it uses as much as digits as its factorization.

90051853 is an odious number, because the sum of its binary digits is odd.

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

The square root of 90051853 is about 9489.5654800417. The cubic root of 90051853 is about 448.2265226807.

The spelling of 90051853 in words is "ninety million, fifty-one thousand, eight hundred fifty-three".