2090526257 has 4 divisors (see below), whose sum is σ = 2093073396. Its totient is φ = 2087979120.

The previous prime is 2090526253. The next prime is 2090526259. The reversal of 2090526257 is 7526250902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 643180321 + 1447345936 = 25361^2 + 38044^2 .

It is a cyclic number.

It is not a de Polignac number, because 2090526257 - 2² = 2090526253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2090526257.

It is not an unprimeable number, because it can be changed into a prime (2090526253) 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 in 3 ways as a sum of consecutive naturals, for example, 1272338 + ... + 1273979.

It is an arithmetic number, because the mean of its divisors is an integer number (523268349).

Almost surely, 2^2090526257 is an apocalyptic number.

It is an amenable number.

2090526257 is a deficient number, since it is larger than the sum of its proper divisors (2547139).

2090526257 is an equidigital number, since it uses as much as digits as its factorization.

2090526257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547138.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 2090526257 is about 45722.2730952869. The cubic root of 2090526257 is about 1278.6505670033.

The spelling of 2090526257 in words is "two billion, ninety million, five hundred twenty-six thousand, two hundred fifty-seven".