90922451 has 2 divisors, whose sum is σ = 90922452. Its totient is φ = 90922450.

The previous prime is 90922441. The next prime is 90922457. The reversal of 90922451 is 15422909.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90922451 is a prime.

It is not a weakly prime, because it can be changed into another prime (90922457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45461225 + 45461226.

It is an arithmetic number, because the mean of its divisors is an integer number (45461226).

Almost surely, 2^90922451 is an apocalyptic number.

90922451 is a deficient number, since it is larger than the sum of its proper divisors (1).

90922451 is an equidigital number, since it uses as much as digits as its factorization.

90922451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 90922451 is about 9535.3264757952. The cubic root of 90922451 is about 449.6663386696. Note that the first 3 decimals are identical.

The spelling of 90922451 in words is "ninety million, nine hundred twenty-two thousand, four hundred fifty-one".