72517453 has 2 divisors, whose sum is σ = 72517454. Its totient is φ = 72517452.

The previous prime is 72517439. The next prime is 72517457. The reversal of 72517453 is 35471527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40220964 + 32296489 = 6342^2 + 5683^2 .

It is a cyclic number.

It is not a de Polignac number, because 72517453 - 2²⁵ = 38963021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72517457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36258726 + 36258727.

It is an arithmetic number, because the mean of its divisors is an integer number (36258727).

Almost surely, 2^72517453 is an apocalyptic number.

It is an amenable number.

72517453 is a deficient number, since it is larger than the sum of its proper divisors (1).

72517453 is an equidigital number, since it uses as much as digits as its factorization.

72517453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29400, while the sum is 34.

The square root of 72517453 is about 8515.7179967399. The cubic root of 72517453 is about 417.0110028975.

The spelling of 72517453 in words is "seventy-two million, five hundred seventeen thousand, four hundred fifty-three".