90450571 has 2 divisors, whose sum is σ = 90450572. Its totient is φ = 90450570.

The previous prime is 90450553. The next prime is 90450589. The reversal of 90450571 is 17505409.

It is a balanced prime because it is at equal distance from previous prime (90450553) and next prime (90450589).

It is an emirp because it is prime and its reverse (17505409) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90450571 - 2⁵ = 90450539 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90450541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45225285 + 45225286.

It is an arithmetic number, because the mean of its divisors is an integer number (45225286).

Almost surely, 2^90450571 is an apocalyptic number.

90450571 is a deficient number, since it is larger than the sum of its proper divisors (1).

90450571 is an equidigital number, since it uses as much as digits as its factorization.

90450571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 90450571 is about 9510.5505098285. The cubic root of 90450571 is about 448.8870786447.

The spelling of 90450571 in words is "ninety million, four hundred fifty thousand, five hundred seventy-one".