52578817 has 2 divisors, whose sum is σ = 52578818. Its totient is φ = 52578816.

The previous prime is 52578811. The next prime is 52578839. The reversal of 52578817 is 71887525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42107121 + 10471696 = 6489^2 + 3236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52578817 is a prime.

It is not a weakly prime, because it can be changed into another prime (52578811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26289408 + 26289409.

It is an arithmetic number, because the mean of its divisors is an integer number (26289409).

Almost surely, 2^52578817 is an apocalyptic number.

It is an amenable number.

52578817 is a deficient number, since it is larger than the sum of its proper divisors (1).

52578817 is an equidigital number, since it uses as much as digits as its factorization.

52578817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 156800, while the sum is 43.

The square root of 52578817 is about 7251.1252230257. The cubic root of 52578817 is about 374.6309067656.

The spelling of 52578817 in words is "fifty-two million, five hundred seventy-eight thousand, eight hundred seventeen".