52778837 has 2 divisors, whose sum is σ = 52778838. Its totient is φ = 52778836.

The previous prime is 52778819. The next prime is 52778851. The reversal of 52778837 is 73887725.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40883236 + 11895601 = 6394^2 + 3449^2 .

It is a cyclic number.

It is not a de Polignac number, because 52778837 - 2¹⁶ = 52713301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52778791 and 52778800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52778807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26389418 + 26389419.

It is an arithmetic number, because the mean of its divisors is an integer number (26389419).

Almost surely, 2^52778837 is an apocalyptic number.

It is an amenable number.

52778837 is a deficient number, since it is larger than the sum of its proper divisors (1).

52778837 is an equidigital number, since it uses as much as digits as its factorization.

52778837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 658560, while the sum is 47.

The square root of 52778837 is about 7264.9044728751. The cubic root of 52778837 is about 375.1053618017.

The spelling of 52778837 in words is "fifty-two million, seven hundred seventy-eight thousand, eight hundred thirty-seven".