72484457 has 2 divisors, whose sum is σ = 72484458. Its totient is φ = 72484456.

The previous prime is 72484441. The next prime is 72484463. The reversal of 72484457 is 75448427.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64705936 + 7778521 = 8044^2 + 2789^2 .

It is a cyclic number.

It is not a de Polignac number, because 72484457 - 2⁴ = 72484441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72484157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36242228 + 36242229.

It is an arithmetic number, because the mean of its divisors is an integer number (36242229).

Almost surely, 2^72484457 is an apocalyptic number.

It is an amenable number.

72484457 is a deficient number, since it is larger than the sum of its proper divisors (1).

72484457 is an equidigital number, since it uses as much as digits as its factorization.

72484457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 250880, while the sum is 41.

The square root of 72484457 is about 8513.7804176523. The cubic root of 72484457 is about 416.9477455623.

The spelling of 72484457 in words is "seventy-two million, four hundred eighty-four thousand, four hundred fifty-seven".