52278277 has 2 divisors, whose sum is σ = 52278278. Its totient is φ = 52278276.

The previous prime is 52278269. The next prime is 52278283. The reversal of 52278277 is 77287225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26532801 + 25745476 = 5151^2 + 5074^2 .

It is a cyclic number.

It is not a de Polignac number, because 52278277 - 2³ = 52278269 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 (52278217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26139138 + 26139139.

It is an arithmetic number, because the mean of its divisors is an integer number (26139139).

Almost surely, 2^52278277 is an apocalyptic number.

It is an amenable number.

52278277 is a deficient number, since it is larger than the sum of its proper divisors (1).

52278277 is an equidigital number, since it uses as much as digits as its factorization.

52278277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 109760, while the sum is 40.

The square root of 52278277 is about 7230.3718438266. The cubic root of 52278277 is about 373.9157468901.

The spelling of 52278277 in words is "fifty-two million, two hundred seventy-eight thousand, two hundred seventy-seven".