78352441 has 2 divisors, whose sum is σ = 78352442. Its totient is φ = 78352440.

The previous prime is 78352427. The next prime is 78352451. The reversal of 78352441 is 14425387.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57229225 + 21123216 = 7565^2 + 4596^2 .

It is a cyclic number.

It is not a de Polignac number, because 78352441 - 2¹³ = 78344249 is a prime.

It is a super-2 number, since 2×78352441² = 12278210021316962, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78352397 and 78352406.

It is not a weakly prime, because it can be changed into another prime (78352451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39176220 + 39176221.

It is an arithmetic number, because the mean of its divisors is an integer number (39176221).

Almost surely, 2^78352441 is an apocalyptic number.

It is an amenable number.

78352441 is a deficient number, since it is larger than the sum of its proper divisors (1).

78352441 is an equidigital number, since it uses as much as digits as its factorization.

78352441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 34.

The square root of 78352441 is about 8851.6914202880. The cubic root of 78352441 is about 427.9084312943.

The spelling of 78352441 in words is "seventy-eight million, three hundred fifty-two thousand, four hundred forty-one".