72452057 has 2 divisors, whose sum is σ = 72452058. Its totient is φ = 72452056.

The previous prime is 72451993. The next prime is 72452077. The reversal of 72452057 is 75025427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59892121 + 12559936 = 7739^2 + 3544^2 .

It is an emirp because it is prime and its reverse (75025427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72452057 - 2⁶ = 72451993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72452077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36226028 + 36226029.

It is an arithmetic number, because the mean of its divisors is an integer number (36226029).

Almost surely, 2^72452057 is an apocalyptic number.

It is an amenable number.

72452057 is a deficient number, since it is larger than the sum of its proper divisors (1).

72452057 is an equidigital number, since it uses as much as digits as its factorization.

72452057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 72452057 is about 8511.8774074819. The cubic root of 72452057 is about 416.8856121485.

The spelling of 72452057 in words is "seventy-two million, four hundred fifty-two thousand, fifty-seven".