78232543 has 2 divisors, whose sum is σ = 78232544. Its totient is φ = 78232542.

The previous prime is 78232493. The next prime is 78232547. The reversal of 78232543 is 34523287.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78232543 - 2⁹ = 78232031 is a prime.

It is a super-2 number, since 2×78232543² = 12240661568493698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78232499 and 78232508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78232547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39116271 + 39116272.

It is an arithmetic number, because the mean of its divisors is an integer number (39116272).

Almost surely, 2^78232543 is an apocalyptic number.

78232543 is a deficient number, since it is larger than the sum of its proper divisors (1).

78232543 is an equidigital number, since it uses as much as digits as its factorization.

78232543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 34.

The square root of 78232543 is about 8844.9162234585. The cubic root of 78232543 is about 427.6900524047.

The spelling of 78232543 in words is "seventy-eight million, two hundred thirty-two thousand, five hundred forty-three".