52785449 has 2 divisors, whose sum is σ = 52785450. Its totient is φ = 52785448.

The previous prime is 52785433. The next prime is 52785457. The reversal of 52785449 is 94458725.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44462224 + 8323225 = 6668^2 + 2885^2 .

It is a cyclic number.

It is not a de Polignac number, because 52785449 - 2⁴ = 52785433 is a prime.

It is a super-2 number, since 2×52785449² = 5572607252263202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52785419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26392724 + 26392725.

It is an arithmetic number, because the mean of its divisors is an integer number (26392725).

Almost surely, 2^52785449 is an apocalyptic number.

It is an amenable number.

52785449 is a deficient number, since it is larger than the sum of its proper divisors (1).

52785449 is an equidigital number, since it uses as much as digits as its factorization.

52785449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 44.

The square root of 52785449 is about 7265.3595231069. The cubic root of 52785449 is about 375.1210252331.

The spelling of 52785449 in words is "fifty-two million, seven hundred eighty-five thousand, four hundred forty-nine".