90057841 has 2 divisors, whose sum is σ = 90057842. Its totient is φ = 90057840.

The previous prime is 90057839. The next prime is 90057893. The reversal of 90057841 is 14875009.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87030241 + 3027600 = 9329^2 + 1740^2 .

It is a cyclic number.

It is not a de Polignac number, because 90057841 - 2¹ = 90057839 is a prime.

It is a super-2 number, since 2×90057841² = 16220829451162562, which contains 22 as substring.

Together with 90057839, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 90057797 and 90057806.

It is not a weakly prime, because it can be changed into another prime (90052841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45028920 + 45028921.

It is an arithmetic number, because the mean of its divisors is an integer number (45028921).

Almost surely, 2^90057841 is an apocalyptic number.

It is an amenable number.

90057841 is a deficient number, since it is larger than the sum of its proper divisors (1).

90057841 is an equidigital number, since it uses as much as digits as its factorization.

90057841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 90057841 is about 9489.8809792326. The cubic root of 90057841 is about 448.2364574048.

The spelling of 90057841 in words is "ninety million, fifty-seven thousand, eight hundred forty-one".