202540801 has 4 divisors (see below), whose sum is σ = 205861204. Its totient is φ = 199220400.

The previous prime is 202540781. The next prime is 202540823. The reversal of 202540801 is 108045202.

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 40640625 + 161900176 = 6375^2 + 12724^2 .

It is a cyclic number.

It is not a de Polignac number, because 202540801 - 2⁷ = 202540673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202540201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1660110 + ... + 1660231.

It is an arithmetic number, because the mean of its divisors is an integer number (51465301).

Almost surely, 2^202540801 is an apocalyptic number.

It is an amenable number.

202540801 is a deficient number, since it is larger than the sum of its proper divisors (3320403).

202540801 is an equidigital number, since it uses as much as digits as its factorization.

202540801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320402.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 202540801 is about 14231.6829995612. The cubic root of 202540801 is about 587.2695831600.

The spelling of 202540801 in words is "two hundred two million, five hundred forty thousand, eight hundred one".