72453247 has 2 divisors, whose sum is σ = 72453248. Its totient is φ = 72453246.

The previous prime is 72453233. The next prime is 72453287. The reversal of 72453247 is 74235427.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72453247 - 2¹⁵ = 72420479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72453287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36226623 + 36226624.

It is an arithmetic number, because the mean of its divisors is an integer number (36226624).

Almost surely, 2^72453247 is an apocalyptic number.

72453247 is a deficient number, since it is larger than the sum of its proper divisors (1).

72453247 is an equidigital number, since it uses as much as digits as its factorization.

72453247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 34.

The square root of 72453247 is about 8511.9473095174. The cubic root of 72453247 is about 416.8878945367.

The spelling of 72453247 in words is "seventy-two million, four hundred fifty-three thousand, two hundred forty-seven".