72455129 has 16 divisors (see below), whose sum is σ = 78697344. Its totient is φ = 66528000.

The previous prime is 72455111. The next prime is 72455147. The reversal of 72455129 is 92155427.

It is an interprime number because it is at equal distance from previous prime (72455111) and next prime (72455147).

It is a cyclic number.

It is not a de Polignac number, because 72455129 - 2¹⁶ = 72389593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72455179) 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 in 15 ways as a sum of consecutive naturals, for example, 59729 + ... + 60929.

It is an arithmetic number, because the mean of its divisors is an integer number (4918584).

Almost surely, 2^72455129 is an apocalyptic number.

It is an amenable number.

72455129 is a deficient number, since it is larger than the sum of its proper divisors (6242215).

72455129 is a wasteful number, since it uses less digits than its factorization.

72455129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328.

The product of its digits is 25200, while the sum is 35.

The square root of 72455129 is about 8512.0578592958. The cubic root of 72455129 is about 416.8915041115.

The spelling of 72455129 in words is "seventy-two million, four hundred fifty-five thousand, one hundred twenty-nine".