3526506421 has 4 divisors (see below), whose sum is σ = 3593044332. Its totient is φ = 3459968512.

The previous prime is 3526506337. The next prime is 3526506427. The reversal of 3526506421 is 1246056253.

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 3010716900 + 515789521 = 54870^2 + 22711^2 .

It is a cyclic number.

It is not a de Polignac number, because 3526506421 - 2⁷ = 3526506293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3526506427) 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, 33268876 + ... + 33268981.

It is an arithmetic number, because the mean of its divisors is an integer number (898261083).

Almost surely, 2^3526506421 is an apocalyptic number.

It is an amenable number.

3526506421 is a deficient number, since it is larger than the sum of its proper divisors (66537911).

3526506421 is an equidigital number, since it uses as much as digits as its factorization.

3526506421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66537910.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 3526506421 is about 59384.3954334807. The cubic root of 3526506421 is about 1522.1176653615.

The spelling of 3526506421 in words is "three billion, five hundred twenty-six million, five hundred six thousand, four hundred twenty-one".