72254197 has 2 divisors, whose sum is σ = 72254198. Its totient is φ = 72254196.

The previous prime is 72254183. The next prime is 72254209. The reversal of 72254197 is 79145227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61324561 + 10929636 = 7831^2 + 3306^2 .

It is a cyclic number.

It is not a de Polignac number, because 72254197 - 2¹⁹ = 71729909 is a prime.

It is a super-2 number, since 2×72254197² = 10441337968229618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72254297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36127098 + 36127099.

It is an arithmetic number, because the mean of its divisors is an integer number (36127099).

Almost surely, 2^72254197 is an apocalyptic number.

It is an amenable number.

72254197 is a deficient number, since it is larger than the sum of its proper divisors (1).

72254197 is an equidigital number, since it uses as much as digits as its factorization.

72254197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 37.

The square root of 72254197 is about 8500.2468787677. The cubic root of 72254197 is about 416.5057738982.

The spelling of 72254197 in words is "seventy-two million, two hundred fifty-four thousand, one hundred ninety-seven".