72122807 has 2 divisors, whose sum is σ = 72122808. Its totient is φ = 72122806.

The previous prime is 72122761. The next prime is 72122819. The reversal of 72122807 is 70822127.

It is a strong prime.

It is an emirp because it is prime and its reverse (70822127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72122807 - 2¹⁴ = 72106423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72122807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72122867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36061403 + 36061404.

It is an arithmetic number, because the mean of its divisors is an integer number (36061404).

Almost surely, 2^72122807 is an apocalyptic number.

72122807 is a deficient number, since it is larger than the sum of its proper divisors (1).

72122807 is an equidigital number, since it uses as much as digits as its factorization.

72122807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 72122807 is about 8492.5147630134. The cubic root of 72122807 is about 416.2531569769.

The spelling of 72122807 in words is "seventy-two million, one hundred twenty-two thousand, eight hundred seven".