52277681 has 2 divisors, whose sum is σ = 52277682. Its totient is φ = 52277680.

The previous prime is 52277657. The next prime is 52277711. The reversal of 52277681 is 18677225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52070656 + 207025 = 7216^2 + 455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52277681 is a prime.

It is a super-2 number, since 2×52277681² = 5465911861475522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52277651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26138840 + 26138841.

It is an arithmetic number, because the mean of its divisors is an integer number (26138841).

Almost surely, 2^52277681 is an apocalyptic number.

It is an amenable number.

52277681 is a deficient number, since it is larger than the sum of its proper divisors (1).

52277681 is an equidigital number, since it uses as much as digits as its factorization.

52277681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 38.

The square root of 52277681 is about 7230.3306286781. The cubic root of 52277681 is about 373.9143259389.

The spelling of 52277681 in words is "fifty-two million, two hundred seventy-seven thousand, six hundred eighty-one".