72366451 has 2 divisors, whose sum is σ = 72366452. Its totient is φ = 72366450.

The previous prime is 72366403. The next prime is 72366457. The reversal of 72366451 is 15466327.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72366451 - 2⁹ = 72365939 is a prime.

It is not a weakly prime, because it can be changed into another prime (72366457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36183225 + 36183226.

It is an arithmetic number, because the mean of its divisors is an integer number (36183226).

Almost surely, 2^72366451 is an apocalyptic number.

72366451 is a deficient number, since it is larger than the sum of its proper divisors (1).

72366451 is an equidigital number, since it uses as much as digits as its factorization.

72366451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 72366451 is about 8506.8473008512. The cubic root of 72366451 is about 416.7213565191.

The spelling of 72366451 in words is "seventy-two million, three hundred sixty-six thousand, four hundred fifty-one".