72494231 has 2 divisors, whose sum is σ = 72494232. Its totient is φ = 72494230.

The previous prime is 72494209. The next prime is 72494237. The reversal of 72494231 is 13249427.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72494231 - 2⁶ = 72494167 is a prime.

It is a super-2 number, since 2×72494231² = 10510827056562722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72494237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36247115 + 36247116.

It is an arithmetic number, because the mean of its divisors is an integer number (36247116).

Almost surely, 2^72494231 is an apocalyptic number.

72494231 is a deficient number, since it is larger than the sum of its proper divisors (1).

72494231 is an equidigital number, since it uses as much as digits as its factorization.

72494231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 72494231 is about 8514.3544088792. The cubic root of 72494231 is about 416.9664855068.

The spelling of 72494231 in words is "seventy-two million, four hundred ninety-four thousand, two hundred thirty-one".