52978249 has 2 divisors, whose sum is σ = 52978250. Its totient is φ = 52978248.

The previous prime is 52978241. The next prime is 52978253. The reversal of 52978249 is 94287925.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34012224 + 18966025 = 5832^2 + 4355^2 .

It is a cyclic number.

It is not a de Polignac number, because 52978249 - 2³ = 52978241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52978199 and 52978208.

It is not a weakly prime, because it can be changed into another prime (52978241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26489124 + 26489125.

It is an arithmetic number, because the mean of its divisors is an integer number (26489125).

Almost surely, 2^52978249 is an apocalyptic number.

It is an amenable number.

52978249 is a deficient number, since it is larger than the sum of its proper divisors (1).

52978249 is an equidigital number, since it uses as much as digits as its factorization.

52978249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 46.

The square root of 52978249 is about 7278.6158711667. The cubic root of 52978249 is about 375.5771828744.

The spelling of 52978249 in words is "fifty-two million, nine hundred seventy-eight thousand, two hundred forty-nine".