531694249 has 2 divisors, whose sum is σ = 531694250. Its totient is φ = 531694248.

The previous prime is 531694231. The next prime is 531694279. The reversal of 531694249 is 942496135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 519840000 + 11854249 = 22800^2 + 3443^2 .

It is a cyclic number.

It is not a de Polignac number, because 531694249 - 2¹¹ = 531692201 is a prime.

It is not a weakly prime, because it can be changed into another prime (531694279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265847124 + 265847125.

It is an arithmetic number, because the mean of its divisors is an integer number (265847125).

Almost surely, 2^531694249 is an apocalyptic number.

It is an amenable number.

531694249 is a deficient number, since it is larger than the sum of its proper divisors (1).

531694249 is an equidigital number, since it uses as much as digits as its factorization.

531694249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 43.

The square root of 531694249 is about 23058.4962432506. The cubic root of 531694249 is about 810.1286433895.

The spelling of 531694249 in words is "five hundred thirty-one million, six hundred ninety-four thousand, two hundred forty-nine".