72152797 has 2 divisors, whose sum is σ = 72152798. Its totient is φ = 72152796.

The previous prime is 72152789. The next prime is 72152807. The reversal of 72152797 is 79725127.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72148036 + 4761 = 8494^2 + 69^2 .

It is an emirp because it is prime and its reverse (79725127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72152797 - 2³ = 72152789 is a prime.

It is a super-2 number, since 2×72152797² = 10412052229846418, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72152767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36076398 + 36076399.

It is an arithmetic number, because the mean of its divisors is an integer number (36076399).

Almost surely, 2^72152797 is an apocalyptic number.

It is an amenable number.

72152797 is a deficient number, since it is larger than the sum of its proper divisors (1).

72152797 is an equidigital number, since it uses as much as digits as its factorization.

72152797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61740, while the sum is 40.

The square root of 72152797 is about 8494.2802520284. The cubic root of 72152797 is about 416.3108442412.

The spelling of 72152797 in words is "seventy-two million, one hundred fifty-two thousand, seven hundred ninety-seven".