90574819 has 2 divisors, whose sum is σ = 90574820. Its totient is φ = 90574818.

The previous prime is 90574787. The next prime is 90574837. The reversal of 90574819 is 91847509.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90574819 - 2⁵ = 90574787 is a prime.

It is a super-2 number, since 2×90574819² = 16407595673765522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90574879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45287409 + 45287410.

It is an arithmetic number, because the mean of its divisors is an integer number (45287410).

Almost surely, 2^90574819 is an apocalyptic number.

90574819 is a deficient number, since it is larger than the sum of its proper divisors (1).

90574819 is an equidigital number, since it uses as much as digits as its factorization.

90574819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 90574819 is about 9517.0803821340. The cubic root of 90574819 is about 449.0925234632.

The spelling of 90574819 in words is "ninety million, five hundred seventy-four thousand, eight hundred nineteen".