78282461 has 2 divisors, whose sum is σ = 78282462. Its totient is φ = 78282460.

The previous prime is 78282389. The next prime is 78282473. The reversal of 78282461 is 16428287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70476025 + 7806436 = 8395^2 + 2794^2 .

It is a cyclic number.

It is not a de Polignac number, because 78282461 - 2¹⁴ = 78266077 is a prime.

It is a super-2 number, since 2×78282461² = 12256287400433042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78282361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39141230 + 39141231.

It is an arithmetic number, because the mean of its divisors is an integer number (39141231).

Almost surely, 2^78282461 is an apocalyptic number.

It is an amenable number.

78282461 is a deficient number, since it is larger than the sum of its proper divisors (1).

78282461 is an equidigital number, since it uses as much as digits as its factorization.

78282461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 38.

The square root of 78282461 is about 8847.7376204316. The cubic root of 78282461 is about 427.7809987551.

The spelling of 78282461 in words is "seventy-eight million, two hundred eighty-two thousand, four hundred sixty-one".