252145101 has 16 divisors (see below), whose sum is σ = 364492800. Its totient is φ = 154121280.

The previous prime is 252145063. The next prime is 252145129. The reversal of 252145101 is 101541252.

It is not a de Polignac number, because 252145101 - 2¹⁰ = 252144077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252145151) 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 15 ways as a sum of consecutive naturals, for example, 15885 + ... + 27506.

It is an arithmetic number, because the mean of its divisors is an integer number (22780800).

Almost surely, 2^252145101 is an apocalyptic number.

It is an amenable number.

252145101 is a deficient number, since it is larger than the sum of its proper divisors (112347699).

252145101 is a wasteful number, since it uses less digits than its factorization.

252145101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43556.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 252145101 is about 15879.0774606083. The cubic root of 252145101 is about 631.7571679987.

Adding to 252145101 its reverse (101541252), we get a palindrome (353686353).

The spelling of 252145101 in words is "two hundred fifty-two million, one hundred forty-five thousand, one hundred one".