52681549 has 2 divisors, whose sum is σ = 52681550. Its totient is φ = 52681548.

The previous prime is 52681537. The next prime is 52681567. The reversal of 52681549 is 94518625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38378025 + 14303524 = 6195^2 + 3782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52681549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52681049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26340774 + 26340775.

It is an arithmetic number, because the mean of its divisors is an integer number (26340775).

Almost surely, 2^52681549 is an apocalyptic number.

It is an amenable number.

52681549 is a deficient number, since it is larger than the sum of its proper divisors (1).

52681549 is an equidigital number, since it uses as much as digits as its factorization.

52681549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 40.

The square root of 52681549 is about 7258.2056322482. The cubic root of 52681549 is about 374.8747409799.

The spelling of 52681549 in words is "fifty-two million, six hundred eighty-one thousand, five hundred forty-nine".