2535021801 has 27 divisors (see below), whose sum is σ = 3968107767. Its totient is φ = 1558805040.

The previous prime is 2535021779. The next prime is 2535021821. The reversal of 2535021801 is 1081205352.

It is a happy number.

The square root of 2535021801 is 50349.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 375003225 + 2160018576 = 19365^2 + 46476^2 .

It is not a de Polignac number, because 2535021801 - 2⁹ = 2535021289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2535021821) 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 26 ways as a sum of consecutive naturals, for example, 1962966 + ... + 1964256.

Almost surely, 2^2535021801 is an apocalyptic number.

2535021801 is the 50349-th square number.

2535021801 is the 25175-th centered octagonal number.

It is an amenable number.

2535021801 is a deficient number, since it is larger than the sum of its proper divisors (1433085966).

2535021801 is an equidigital number, since it uses as much as digits as its factorization.

2535021801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2614 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The cubic root of 2535021801 is about 1363.5170289013.

The spelling of 2535021801 in words is "two billion, five hundred thirty-five million, twenty-one thousand, eight hundred one".