72581083 has 4 divisors (see below), whose sum is σ = 76401160. Its totient is φ = 68761008.

The previous prime is 72581063. The next prime is 72581141. The reversal of 72581083 is 38018527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38018527 = 277 ⋅137251.

It is a cyclic number.

It is not a de Polignac number, because 72581083 - 2²⁵ = 39026651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72581023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1910010 + ... + 1910047.

It is an arithmetic number, because the mean of its divisors is an integer number (19100290).

Almost surely, 2^72581083 is an apocalyptic number.

72581083 is a deficient number, since it is larger than the sum of its proper divisors (3820077).

72581083 is a wasteful number, since it uses less digits than its factorization.

72581083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820076.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 72581083 is about 8519.4532101538. The cubic root of 72581083 is about 417.1329351680.

The spelling of 72581083 in words is "seventy-two million, five hundred eighty-one thousand, eighty-three".