745222547 has 4 divisors (see below), whose sum is σ = 769262016. Its totient is φ = 721183080.

The previous prime is 745222531. The next prime is 745222549.

It is a happy number.

745222547 is nontrivially palindromic in base 10.

745222547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 745222547 - 2⁴ = 745222531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 745222547.

It is not an unprimeable number, because it can be changed into a prime (745222549) 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, 12019688 + ... + 12019749.

It is an arithmetic number, because the mean of its divisors is an integer number (192315504).

Almost surely, 2^745222547 is an apocalyptic number.

745222547 is a deficient number, since it is larger than the sum of its proper divisors (24039469).

745222547 is a wasteful number, since it uses less digits than its factorization.

745222547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24039468.

The product of its digits is 156800, while the sum is 38.

The square root of 745222547 is about 27298.7645691156. The cubic root of 745222547 is about 906.6270282706.

The spelling of 745222547 in words is "seven hundred forty-five million, two hundred twenty-two thousand, five hundred forty-seven".