72498457 has 2 divisors, whose sum is σ = 72498458. Its totient is φ = 72498456.

The previous prime is 72498451. The next prime is 72498467. The reversal of 72498457 is 75489427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61402896 + 11095561 = 7836^2 + 3331^2 .

It is a cyclic number.

It is not a de Polignac number, because 72498457 - 2³ = 72498449 is a prime.

It is not a weakly prime, because it can be changed into another prime (72498451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36249228 + 36249229.

It is an arithmetic number, because the mean of its divisors is an integer number (36249229).

Almost surely, 2^72498457 is an apocalyptic number.

It is an amenable number.

72498457 is a deficient number, since it is larger than the sum of its proper divisors (1).

72498457 is an equidigital number, since it uses as much as digits as its factorization.

72498457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 46.

The square root of 72498457 is about 8514.6025744012. The cubic root of 72498457 is about 416.9745876050.

The spelling of 72498457 in words is "seventy-two million, four hundred ninety-eight thousand, four hundred fifty-seven".