78254411 has 2 divisors, whose sum is σ = 78254412. Its totient is φ = 78254410.

The previous prime is 78254401. The next prime is 78254431. The reversal of 78254411 is 11445287.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78254411 is a prime.

It is a super-2 number, since 2×78254411² = 12247505681913842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78254401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39127205 + 39127206.

It is an arithmetic number, because the mean of its divisors is an integer number (39127206).

Almost surely, 2^78254411 is an apocalyptic number.

78254411 is a deficient number, since it is larger than the sum of its proper divisors (1).

78254411 is an equidigital number, since it uses as much as digits as its factorization.

78254411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 32.

The square root of 78254411 is about 8846.1523274246. The cubic root of 78254411 is about 427.7298988011.

Adding to 78254411 its reverse (11445287), we get a palindrome (89699698).

The spelling of 78254411 in words is "seventy-eight million, two hundred fifty-four thousand, four hundred eleven".