78545741 has 4 divisors (see below), whose sum is σ = 78563712. Its totient is φ = 78527772.

The previous prime is 78545699. The next prime is 78545743. The reversal of 78545741 is 14754587.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78545741 - 2²⁶ = 11436877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78545743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2276 + ... + 12738.

It is an arithmetic number, because the mean of its divisors is an integer number (19640928).

Almost surely, 2^78545741 is an apocalyptic number.

It is an amenable number.

78545741 is a deficient number, since it is larger than the sum of its proper divisors (17971).

78545741 is a wasteful number, since it uses less digits than its factorization.

78545741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17970.

The product of its digits is 156800, while the sum is 41.

The square root of 78545741 is about 8862.6035113842. The cubic root of 78545741 is about 428.2600339210.

The spelling of 78545741 in words is "seventy-eight million, five hundred forty-five thousand, seven hundred forty-one".