52278469 has 2 divisors, whose sum is σ = 52278470. Its totient is φ = 52278468.

The previous prime is 52278461. The next prime is 52278547. The reversal of 52278469 is 96487225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44715969 + 7562500 = 6687^2 + 2750^2 .

It is a cyclic number.

It is not a de Polignac number, because 52278469 - 2³ = 52278461 is a prime.

It is a super-2 number, since 2×52278469² = 5466076641967922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52278461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26139234 + 26139235.

It is an arithmetic number, because the mean of its divisors is an integer number (26139235).

Almost surely, 2^52278469 is an apocalyptic number.

It is an amenable number.

52278469 is a deficient number, since it is larger than the sum of its proper divisors (1).

52278469 is an equidigital number, since it uses as much as digits as its factorization.

52278469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

The square root of 52278469 is about 7230.3851211398. The cubic root of 52278469 is about 373.9162046438.

The spelling of 52278469 in words is "fifty-two million, two hundred seventy-eight thousand, four hundred sixty-nine".