52122145 has 4 divisors (see below), whose sum is σ = 62546580. Its totient is φ = 41697712.

The previous prime is 52122143. The next prime is 52122157. The reversal of 52122145 is 54122125.

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 6411024 + 45711121 = 2532^2 + 6761^2 .

It is a cyclic number.

It is not a de Polignac number, because 52122145 - 2¹ = 52122143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52122143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5212210 + ... + 5212219.

It is an arithmetic number, because the mean of its divisors is an integer number (15636645).

Almost surely, 2^52122145 is an apocalyptic number.

It is an amenable number.

52122145 is a deficient number, since it is larger than the sum of its proper divisors (10424435).

52122145 is a wasteful number, since it uses less digits than its factorization.

52122145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10424434.

The product of its digits is 800, while the sum is 22.

The square root of 52122145 is about 7219.5668152598. The cubic root of 52122145 is about 373.5431356006.

The spelling of 52122145 in words is "fifty-two million, one hundred twenty-two thousand, one hundred forty-five".