52780061 has 2 divisors, whose sum is σ = 52780062. Its totient is φ = 52780060.

The previous prime is 52780037. The next prime is 52780069. The reversal of 52780061 is 16008725.

52780061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51768025 + 1012036 = 7195^2 + 1006^2 .

It is a cyclic number.

It is not a de Polignac number, because 52780061 - 2¹⁴ = 52763677 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52780069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26390030 + 26390031.

It is an arithmetic number, because the mean of its divisors is an integer number (26390031).

Almost surely, 2^52780061 is an apocalyptic number.

It is an amenable number.

52780061 is a deficient number, since it is larger than the sum of its proper divisors (1).

52780061 is an equidigital number, since it uses as much as digits as its factorization.

52780061 is an odious number, because the sum of its binary digits is odd.

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

The square root of 52780061 is about 7264.9887129988. The cubic root of 52780061 is about 375.1082614829.

Adding to 52780061 its reverse (16008725), we get a palindrome (68788786).

The spelling of 52780061 in words is "fifty-two million, seven hundred eighty thousand, sixty-one".