72322357 has 2 divisors, whose sum is σ = 72322358. Its totient is φ = 72322356.

The previous prime is 72322337. The next prime is 72322381. The reversal of 72322357 is 75322327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70660836 + 1661521 = 8406^2 + 1289^2 .

It is a cyclic number.

It is not a de Polignac number, because 72322357 - 2¹¹ = 72320309 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72322337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36161178 + 36161179.

It is an arithmetic number, because the mean of its divisors is an integer number (36161179).

Almost surely, 2^72322357 is an apocalyptic number.

It is an amenable number.

72322357 is a deficient number, since it is larger than the sum of its proper divisors (1).

72322357 is an equidigital number, since it uses as much as digits as its factorization.

72322357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 31.

The square root of 72322357 is about 8504.2552290015. The cubic root of 72322357 is about 416.6367010628.

The spelling of 72322357 in words is "seventy-two million, three hundred twenty-two thousand, three hundred fifty-seven".