90104851 has 2 divisors, whose sum is σ = 90104852. Its totient is φ = 90104850.

The previous prime is 90104843. The next prime is 90104857. The reversal of 90104851 is 15840109.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (15840109) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90104851 - 2³ = 90104843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90104857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45052425 + 45052426.

It is an arithmetic number, because the mean of its divisors is an integer number (45052426).

Almost surely, 2^90104851 is an apocalyptic number.

90104851 is a deficient number, since it is larger than the sum of its proper divisors (1).

90104851 is an equidigital number, since it uses as much as digits as its factorization.

90104851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 90104851 is about 9492.3575048562. The cubic root of 90104851 is about 448.3144366614.

It can be divided in two parts, 9010 and 4851, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 90104851 in words is "ninety million, one hundred four thousand, eight hundred fifty-one".