252045001 has 4 divisors (see below), whose sum is σ = 271433092. Its totient is φ = 232656912.

The previous prime is 252044993. The next prime is 252045011. The reversal of 252045001 is 100540252.

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 10086976 + 241958025 = 3176^2 + 15555^2 .

It is a cyclic number.

It is not a de Polignac number, because 252045001 - 2³ = 252044993 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 252045001.

It is not an unprimeable number, because it can be changed into a prime (252045011) 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, 9694026 + ... + 9694051.

It is an arithmetic number, because the mean of its divisors is an integer number (67858273).

Almost surely, 2^252045001 is an apocalyptic number.

It is an amenable number.

252045001 is a deficient number, since it is larger than the sum of its proper divisors (19388091).

252045001 is a wasteful number, since it uses less digits than its factorization.

252045001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19388090.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 252045001 is about 15875.9252013859. The cubic root of 252045001 is about 631.6735557419.

Adding to 252045001 its reverse (100540252), we get a palindrome (352585253).

The spelling of 252045001 in words is "two hundred fifty-two million, forty-five thousand, one".