252015101 has 4 divisors (see below), whose sum is σ = 271400892. Its totient is φ = 232629312.

The previous prime is 252015097. The next prime is 252015119. The reversal of 252015101 is 101510252.

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 25512601 + 226502500 = 5051^2 + 15050^2 .

It is a cyclic number.

It is not a de Polignac number, because 252015101 - 2² = 252015097 is a prime.

It is a super-2 number, since 2×252015101² = 127023222264080402, which contains 22 as substring.

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 252015101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252015121) 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 3 ways as a sum of consecutive naturals, for example, 9692876 + ... + 9692901.

It is an arithmetic number, because the mean of its divisors is an integer number (67850223).

Almost surely, 2^252015101 is an apocalyptic number.

It is an amenable number.

252015101 is a deficient number, since it is larger than the sum of its proper divisors (19385791).

252015101 is a wasteful number, since it uses less digits than its factorization.

252015101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19385790.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 252015101 is about 15874.9834960544. The cubic root of 252015101 is about 631.6485763584.

Adding to 252015101 its reverse (101510252), we get a palindrome (353525353).

The spelling of 252015101 in words is "two hundred fifty-two million, fifteen thousand, one hundred one".