72032197 has 2 divisors, whose sum is σ = 72032198. Its totient is φ = 72032196.

The previous prime is 72032161. The next prime is 72032237. The reversal of 72032197 is 79123027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56040196 + 15992001 = 7486^2 + 3999^2 .

It is an emirp because it is prime and its reverse (79123027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72032197 - 2¹¹ = 72030149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72032117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36016098 + 36016099.

It is an arithmetic number, because the mean of its divisors is an integer number (36016099).

Almost surely, 2^72032197 is an apocalyptic number.

It is an amenable number.

72032197 is a deficient number, since it is larger than the sum of its proper divisors (1).

72032197 is an equidigital number, since it uses as much as digits as its factorization.

72032197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 72032197 is about 8487.1783886048. The cubic root of 72032197 is about 416.0787669052.

The spelling of 72032197 in words is "seventy-two million, thirty-two thousand, one hundred ninety-seven".