52778233 has 2 divisors, whose sum is σ = 52778234. Its totient is φ = 52778232.

The previous prime is 52778221. The next prime is 52778239. The reversal of 52778233 is 33287725.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39904489 + 12873744 = 6317^2 + 3588^2 .

It is a cyclic number.

It is not a de Polignac number, because 52778233 - 2⁹ = 52777721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52778192 and 52778201.

It is not a weakly prime, because it can be changed into another prime (52778239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26389116 + 26389117.

It is an arithmetic number, because the mean of its divisors is an integer number (26389117).

Almost surely, 2^52778233 is an apocalyptic number.

It is an amenable number.

52778233 is a deficient number, since it is larger than the sum of its proper divisors (1).

52778233 is an equidigital number, since it uses as much as digits as its factorization.

52778233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 37.

The square root of 52778233 is about 7264.8629030423. The cubic root of 52778233 is about 375.1039308967.

The spelling of 52778233 in words is "fifty-two million, seven hundred seventy-eight thousand, two hundred thirty-three".