52143449 has 2 divisors, whose sum is σ = 52143450. Its totient is φ = 52143448.

The previous prime is 52143401. The next prime is 52143473. The reversal of 52143449 is 94434125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39942400 + 12201049 = 6320^2 + 3493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52143449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52143499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26071724 + 26071725.

It is an arithmetic number, because the mean of its divisors is an integer number (26071725).

Almost surely, 2^52143449 is an apocalyptic number.

It is an amenable number.

52143449 is a deficient number, since it is larger than the sum of its proper divisors (1).

52143449 is an equidigital number, since it uses as much as digits as its factorization.

52143449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 52143449 is about 7221.0420993095. The cubic root of 52143449 is about 373.5940217066.

The spelling of 52143449 in words is "fifty-two million, one hundred forty-three thousand, four hundred forty-nine".