52894781 has 2 divisors, whose sum is σ = 52894782. Its totient is φ = 52894780.

The previous prime is 52894759. The next prime is 52894783. The reversal of 52894781 is 18749825.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27994681 + 24900100 = 5291^2 + 4990^2 .

It is a cyclic number.

It is not a de Polignac number, because 52894781 - 2⁶ = 52894717 is a prime.

It is a super-2 number, since 2×52894781² = 5595715714075922, which contains 22 as substring.

Together with 52894783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52894783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26447390 + 26447391.

It is an arithmetic number, because the mean of its divisors is an integer number (26447391).

Almost surely, 2^52894781 is an apocalyptic number.

It is an amenable number.

52894781 is a deficient number, since it is larger than the sum of its proper divisors (1).

52894781 is an equidigital number, since it uses as much as digits as its factorization.

52894781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 44.

The square root of 52894781 is about 7272.8798285136. The cubic root of 52894781 is about 375.3798367638.

The spelling of 52894781 in words is "fifty-two million, eight hundred ninety-four thousand, seven hundred eighty-one".