72154597 has 2 divisors, whose sum is σ = 72154598. Its totient is φ = 72154596.

The previous prime is 72154507. The next prime is 72154603. The reversal of 72154597 is 79545127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72148036 + 6561 = 8494^2 + 81^2 .

It is a cyclic number.

It is not a de Polignac number, because 72154597 - 2⁷ = 72154469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72154507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36077298 + 36077299.

It is an arithmetic number, because the mean of its divisors is an integer number (36077299).

Almost surely, 2^72154597 is an apocalyptic number.

It is an amenable number.

72154597 is a deficient number, since it is larger than the sum of its proper divisors (1).

72154597 is an equidigital number, since it uses as much as digits as its factorization.

72154597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 40.

The square root of 72154597 is about 8494.3862050180. The cubic root of 72154597 is about 416.3143061227.

The spelling of 72154597 in words is "seventy-two million, one hundred fifty-four thousand, five hundred ninety-seven".