252442155 has 16 divisors (see below), whose sum is σ = 461608704. Its totient is φ = 115402080.

The previous prime is 252442111. The next prime is 252442159. The reversal of 252442155 is 551244252.

It is not a de Polignac number, because 252442155 - 2⁹ = 252441643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252442159) 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, 1202001 + ... + 1202210.

It is an arithmetic number, because the mean of its divisors is an integer number (28850544).

Almost surely, 2^252442155 is an apocalyptic number.

252442155 is a deficient number, since it is larger than the sum of its proper divisors (209166549).

252442155 is a wasteful number, since it uses less digits than its factorization.

252442155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404226.

The product of its digits is 16000, while the sum is 30.

The square root of 252442155 is about 15888.4283363711. The cubic root of 252442155 is about 632.0051632263.

The spelling of 252442155 in words is "two hundred fifty-two million, four hundred forty-two thousand, one hundred fifty-five".