90556049 has 2 divisors, whose sum is σ = 90556050. Its totient is φ = 90556048.

The previous prime is 90556043. The next prime is 90556073. The reversal of 90556049 is 94065509.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52301824 + 38254225 = 7232^2 + 6185^2 .

It is a cyclic number.

It is not a de Polignac number, because 90556049 - 2²⁴ = 73778833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90556043) 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, 45278024 + 45278025.

It is an arithmetic number, because the mean of its divisors is an integer number (45278025).

Almost surely, 2^90556049 is an apocalyptic number.

It is an amenable number.

90556049 is a deficient number, since it is larger than the sum of its proper divisors (1).

90556049 is an equidigital number, since it uses as much as digits as its factorization.

90556049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 90556049 is about 9516.0942092857. The cubic root of 90556049 is about 449.0614992075.

The spelling of 90556049 in words is "ninety million, five hundred fifty-six thousand, forty-nine".