3525521891 has 2 divisors, whose sum is σ = 3525521892. Its totient is φ = 3525521890.

The previous prime is 3525521873. The next prime is 3525521957. The reversal of 3525521891 is 1981255253.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3525521891 - 2²² = 3521327587 is a prime.

It is not a weakly prime, because it can be changed into another prime (3525521491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1762760945 + 1762760946.

It is an arithmetic number, because the mean of its divisors is an integer number (1762760946).

Almost surely, 2^3525521891 is an apocalyptic number.

3525521891 is a deficient number, since it is larger than the sum of its proper divisors (1).

3525521891 is an equidigital number, since it uses as much as digits as its factorization.

3525521891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108000, while the sum is 41.

The square root of 3525521891 is about 59376.1053876052. The cubic root of 3525521891 is about 1521.9760039167.

The spelling of 3525521891 in words is "three billion, five hundred twenty-five million, five hundred twenty-one thousand, eight hundred ninety-one".