72554117 has 2 divisors, whose sum is σ = 72554118. Its totient is φ = 72554116.

The previous prime is 72554089. The next prime is 72554137. The reversal of 72554117 is 71145527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54184321 + 18369796 = 7361^2 + 4286^2 .

It is a cyclic number.

It is not a de Polignac number, because 72554117 - 2⁸ = 72553861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72554137) 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, 36277058 + 36277059.

It is an arithmetic number, because the mean of its divisors is an integer number (36277059).

Almost surely, 2^72554117 is an apocalyptic number.

It is an amenable number.

72554117 is a deficient number, since it is larger than the sum of its proper divisors (1).

72554117 is an equidigital number, since it uses as much as digits as its factorization.

72554117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9800, while the sum is 32.

The square root of 72554117 is about 8517.8704498249. The cubic root of 72554117 is about 417.0812697313.

The spelling of 72554117 in words is "seventy-two million, five hundred fifty-four thousand, one hundred seventeen".