247223045 has 4 divisors (see below), whose sum is σ = 296667660. Its totient is φ = 197778432.

The previous prime is 247223023. The next prime is 247223051. The reversal of 247223045 is 540322742.

247223045 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, and also an emirpimes, since its reverse is a distinct semiprime: 540322742 = 2 ⋅270161371.

It can be written as a sum of positive squares in 2 ways, for example, as 133310116 + 113912929 = 11546^2 + 10673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247223045 is a prime.

It is a super-2 number, since 2×247223045² = 122238467958144050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247222999 and 247223017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24722300 + ... + 24722309.

It is an arithmetic number, because the mean of its divisors is an integer number (74166915).

Almost surely, 2^247223045 is an apocalyptic number.

It is an amenable number.

247223045 is a deficient number, since it is larger than the sum of its proper divisors (49444615).

247223045 is an equidigital number, since it uses as much as digits as its factorization.

247223045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49444614.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 247223045 is about 15723.3280510202. The cubic root of 247223045 is about 627.6193388999.

Adding to 247223045 its reverse (540322742), we get a palindrome (787545787).

The spelling of 247223045 in words is "two hundred forty-seven million, two hundred twenty-three thousand, forty-five".