52281731 has 2 divisors, whose sum is σ = 52281732. Its totient is φ = 52281730.

The previous prime is 52281701. The next prime is 52281763. The reversal of 52281731 is 13718225.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52281731 - 2¹⁴ = 52265347 is a prime.

It is a super-2 number, since 2×52281731² = 5466758792712722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 52281694 and 52281703.

It is not a weakly prime, because it can be changed into another prime (52281701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26140865 + 26140866.

It is an arithmetic number, because the mean of its divisors is an integer number (26140866).

Almost surely, 2^52281731 is an apocalyptic number.

52281731 is a deficient number, since it is larger than the sum of its proper divisors (1).

52281731 is an equidigital number, since it uses as much as digits as its factorization.

52281731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 29.

The square root of 52281731 is about 7230.6106934339. The cubic root of 52281731 is about 373.9239815184.

Adding to 52281731 its reverse (13718225), we get a palindrome (65999956).

The spelling of 52281731 in words is "fifty-two million, two hundred eighty-one thousand, seven hundred thirty-one".