252120245 has 8 divisors (see below), whose sum is σ = 325817016. Its totient is φ = 186181056.

The previous prime is 252120233. The next prime is 252120277. The reversal of 252120245 is 542021252.

252120245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6195121 + 245925124 = 2489^2 + 15682^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252120245 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 252120245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1939322 + ... + 1939451.

It is an arithmetic number, because the mean of its divisors is an integer number (40727127).

Almost surely, 2^252120245 is an apocalyptic number.

It is an amenable number.

252120245 is a deficient number, since it is larger than the sum of its proper divisors (73696771).

252120245 is a wasteful number, since it uses less digits than its factorization.

252120245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3878791.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 252120245 is about 15878.2947762031. The cubic root of 252120245 is about 631.7364081636.

Adding to 252120245 its reverse (542021252), we get a palindrome (794141497).

The spelling of 252120245 in words is "two hundred fifty-two million, one hundred twenty thousand, two hundred forty-five".