72354547 has 2 divisors, whose sum is σ = 72354548. Its totient is φ = 72354546.

The previous prime is 72354539. The next prime is 72354551. The reversal of 72354547 is 74545327.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72354547 - 2³ = 72354539 is a prime.

It is not a weakly prime, because it can be changed into another prime (72351547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36177273 + 36177274.

It is an arithmetic number, because the mean of its divisors is an integer number (36177274).

Almost surely, 2^72354547 is an apocalyptic number.

72354547 is a deficient number, since it is larger than the sum of its proper divisors (1).

72354547 is an equidigital number, since it uses as much as digits as its factorization.

72354547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 37.

The square root of 72354547 is about 8506.1476004123. The cubic root of 72354547 is about 416.6985055848.

The spelling of 72354547 in words is "seventy-two million, three hundred fifty-four thousand, five hundred forty-seven".