72751583 has 4 divisors (see below), whose sum is σ = 74717880. Its totient is φ = 70785288.

The previous prime is 72751579. The next prime is 72751603. The reversal of 72751583 is 38515727.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38515727 = 17 ⋅2265631.

It is a cyclic number.

It is not a de Polignac number, because 72751583 - 2² = 72751579 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71751583) 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, 983093 + ... + 983166.

It is an arithmetic number, because the mean of its divisors is an integer number (18679470).

Almost surely, 2^72751583 is an apocalyptic number.

72751583 is a deficient number, since it is larger than the sum of its proper divisors (1966297).

72751583 is a wasteful number, since it uses less digits than its factorization.

72751583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966296.

The product of its digits is 58800, while the sum is 38.

The square root of 72751583 is about 8529.4538512146. The cubic root of 72751583 is about 417.4593083078.

The spelling of 72751583 in words is "seventy-two million, seven hundred fifty-one thousand, five hundred eighty-three".