745242547 has 4 divisors (see below), whose sum is σ = 851705776. Its totient is φ = 638779320.

The previous prime is 745242499. The next prime is 745242569.

745242547 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 745242547 - 2¹¹ = 745240499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745242577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53231604 + ... + 53231617.

It is an arithmetic number, because the mean of its divisors is an integer number (212926444).

Almost surely, 2^745242547 is an apocalyptic number.

745242547 is a deficient number, since it is larger than the sum of its proper divisors (106463229).

745242547 is a wasteful number, since it uses less digits than its factorization.

745242547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106463228.

The product of its digits is 313600, while the sum is 40.

The square root of 745242547 is about 27299.1308836014. The cubic root of 745242547 is about 906.6351387688.

The spelling of 745242547 in words is "seven hundred forty-five million, two hundred forty-two thousand, five hundred forty-seven".