52155711021761 has 2 divisors, whose sum is σ = 52155711021762. Its totient is φ = 52155711021760.

The previous prime is 52155711021751. The next prime is 52155711021809. The reversal of 52155711021761 is 16712011755125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28336245312400 + 23819465709361 = 5323180^2 + 4880519^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52155711021761 is a prime.

It is a super-2 number, since 2×52155711021761² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (52155711021731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26077855510880 + 26077855510881.

It is an arithmetic number, because the mean of its divisors is an integer number (26077855510881).

Almost surely, 2^{52155711021761} is an apocalyptic number.

It is an amenable number.

52155711021761 is a deficient number, since it is larger than the sum of its proper divisors (1).

52155711021761 is an equidigital number, since it uses as much as digits as its factorization.

52155711021761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147000, while the sum is 44.

Adding to 52155711021761 its reverse (16712011755125), we get a palindrome (68867722776886).

The spelling of 52155711021761 in words is "fifty-two trillion, one hundred fifty-five billion, seven hundred eleven million, twenty-one thousand, seven hundred sixty-one".