472578247 has 2 divisors, whose sum is σ = 472578248. Its totient is φ = 472578246.

The previous prime is 472578209. The next prime is 472578307. The reversal of 472578247 is 742875274.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-472578247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 472578197 and 472578206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (472578347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236289123 + 236289124.

It is an arithmetic number, because the mean of its divisors is an integer number (236289124).

Almost surely, 2^472578247 is an apocalyptic number.

472578247 is a deficient number, since it is larger than the sum of its proper divisors (1).

472578247 is an equidigital number, since it uses as much as digits as its factorization.

472578247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 878080, while the sum is 46.

The square root of 472578247 is about 21738.8648967696. The cubic root of 472578247 is about 778.9171073052.

The spelling of 472578247 in words is "four hundred seventy-two million, five hundred seventy-eight thousand, two hundred forty-seven".