472145777 has 4 divisors (see below), whose sum is σ = 499919076. Its totient is φ = 444372480.

The previous prime is 472145761. The next prime is 472145803. The reversal of 472145777 is 777541274.

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

It can be written as a sum of positive squares in 2 ways, for example, as 181818256 + 290327521 = 13484^2 + 17039^2 .

It is a cyclic number.

It is not a de Polignac number, because 472145777 - 2⁴ = 472145761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (472145747) 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, 13886624 + ... + 13886657.

It is an arithmetic number, because the mean of its divisors is an integer number (124979769).

Almost surely, 2^472145777 is an apocalyptic number.

It is an amenable number.

472145777 is a deficient number, since it is larger than the sum of its proper divisors (27773299).

472145777 is a wasteful number, since it uses less digits than its factorization.

472145777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27773298.

The product of its digits is 384160, while the sum is 44.

The square root of 472145777 is about 21728.9156885474. The cubic root of 472145777 is about 778.6794316102.

The spelling of 472145777 in words is "four hundred seventy-two million, one hundred forty-five thousand, seven hundred seventy-seven".