72514553 has 2 divisors, whose sum is σ = 72514554. Its totient is φ = 72514552.

The previous prime is 72514531. The next prime is 72514567. The reversal of 72514553 is 35541527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71690089 + 824464 = 8467^2 + 908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72514553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (72514753) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36257276 + 36257277.

It is an arithmetic number, because the mean of its divisors is an integer number (36257277).

Almost surely, 2^72514553 is an apocalyptic number.

It is an amenable number.

72514553 is a deficient number, since it is larger than the sum of its proper divisors (1).

72514553 is an equidigital number, since it uses as much as digits as its factorization.

72514553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 32.

The square root of 72514553 is about 8515.5477216677. The cubic root of 72514553 is about 417.0054440149.

The spelling of 72514553 in words is "seventy-two million, five hundred fourteen thousand, five hundred fifty-three".