72434255 has 4 divisors (see below), whose sum is σ = 86921112. Its totient is φ = 57947400.

The previous prime is 72434239. The next prime is 72434279. The reversal of 72434255 is 55243427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55243427 = 4229 ⋅13063.

It is not a de Polignac number, because 72434255 - 2⁴ = 72434239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7243421 + ... + 7243430.

It is an arithmetic number, because the mean of its divisors is an integer number (21730278).

Almost surely, 2^72434255 is an apocalyptic number.

72434255 is a deficient number, since it is larger than the sum of its proper divisors (14486857).

72434255 is a wasteful number, since it uses less digits than its factorization.

72434255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14486856.

The product of its digits is 33600, while the sum is 32.

The square root of 72434255 is about 8510.8316279903. The cubic root of 72434255 is about 416.8514654043.

The spelling of 72434255 in words is "seventy-two million, four hundred thirty-four thousand, two hundred fifty-five".