72401227 has 2 divisors, whose sum is σ = 72401228. Its totient is φ = 72401226.

The previous prime is 72401159. The next prime is 72401239. The reversal of 72401227 is 72210427.

It is a strong prime.

It is an emirp because it is prime and its reverse (72210427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72401227 - 2⁷ = 72401099 is a prime.

It is a super-2 number, since 2×72401227² = 10483875342211058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72401257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36200613 + 36200614.

It is an arithmetic number, because the mean of its divisors is an integer number (36200614).

Almost surely, 2^72401227 is an apocalyptic number.

72401227 is a deficient number, since it is larger than the sum of its proper divisors (1).

72401227 is an equidigital number, since it uses as much as digits as its factorization.

72401227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 72401227 is about 8508.8910558310. The cubic root of 72401227 is about 416.7880982248.

The spelling of 72401227 in words is "seventy-two million, four hundred one thousand, two hundred twenty-seven".