53231449 has 2 divisors, whose sum is σ = 53231450. Its totient is φ = 53231448.

The previous prime is 53231441. The next prime is 53231473. The reversal of 53231449 is 94413235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45805824 + 7425625 = 6768^2 + 2725^2 .

It is a cyclic number.

It is not a de Polignac number, because 53231449 - 2³ = 53231441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53231449.

It is not a weakly prime, because it can be changed into another prime (53231441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26615724 + 26615725.

It is an arithmetic number, because the mean of its divisors is an integer number (26615725).

Almost surely, 2^53231449 is an apocalyptic number.

It is an amenable number.

53231449 is a deficient number, since it is larger than the sum of its proper divisors (1).

53231449 is an equidigital number, since it uses as much as digits as its factorization.

53231449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 53231449 is about 7295.9885553638. The cubic root of 53231449 is about 376.1745666887.

The spelling of 53231449 in words is "fifty-three million, two hundred thirty-one thousand, four hundred forty-nine".