52143225 has 12 divisors (see below), whose sum is σ = 86210256. Its totient is φ = 27809680.

The previous prime is 52143187. The next prime is 52143241. The reversal of 52143225 is 52234125.

52143225 = 365² + 366² + ... + 589².

It is not a de Polignac number, because 52143225 - 2¹³ = 52135033 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 52143195 and 52143204.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 347547 + ... + 347696.

It is an arithmetic number, because the mean of its divisors is an integer number (7184188).

Almost surely, 2^52143225 is an apocalyptic number.

It is an amenable number.

52143225 is a deficient number, since it is larger than the sum of its proper divisors (34067031).

52143225 is a wasteful number, since it uses less digits than its factorization.

52143225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695256 (or 695251 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 52143225 is about 7221.0265890661. The cubic root of 52143225 is about 373.5934867389.

The spelling of 52143225 in words is "fifty-two million, one hundred forty-three thousand, two hundred twenty-five".