52631261 has 2 divisors, whose sum is σ = 52631262. Its totient is φ = 52631260.

The previous prime is 52631239. The next prime is 52631339. The reversal of 52631261 is 16213625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31416025 + 21215236 = 5605^2 + 4606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52631261 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52631261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52631221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26315630 + 26315631.

It is an arithmetic number, because the mean of its divisors is an integer number (26315631).

Almost surely, 2^52631261 is an apocalyptic number.

It is an amenable number.

52631261 is a deficient number, since it is larger than the sum of its proper divisors (1).

52631261 is an equidigital number, since it uses as much as digits as its factorization.

52631261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 52631261 is about 7254.7405880569. The cubic root of 52631261 is about 374.7554221488.

Adding to 52631261 its reverse (16213625), we get a palindrome (68844886).

The spelling of 52631261 in words is "fifty-two million, six hundred thirty-one thousand, two hundred sixty-one".