252021041133445 has 4 divisors (see below), whose sum is σ = 302425249360140. Its totient is φ = 201616832906752.

The previous prime is 252021041133383. The next prime is 252021041133451. The reversal of 252021041133445 is 544331140120252.

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 191213749936036 + 60807291197409 = 13828006^2 + 7797903^2 .

It is a cyclic number.

It is not a de Polignac number, because 252021041133445 - 2¹⁹ = 252021040609157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25202104113340 + ... + 25202104113349.

It is an arithmetic number, because the mean of its divisors is an integer number (75606312340035).

Almost surely, 2^{252021041133445} is an apocalyptic number.

It is an amenable number.

252021041133445 is a deficient number, since it is larger than the sum of its proper divisors (50404208226695).

252021041133445 is an equidigital number, since it uses as much as digits as its factorization.

252021041133445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50404208226694.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 252021041133445 its reverse (544331140120252), we get a palindrome (796352181253697).

The spelling of 252021041133445 in words is "two hundred fifty-two trillion, twenty-one billion, forty-one million, one hundred thirty-three thousand, four hundred forty-five".