72550005 has 16 divisors (see below), whose sum is σ = 126633024. Its totient is φ = 35175680.

The previous prime is 72549991. The next prime is 72550019. The reversal of 72550005 is 50005527.

It is an interprime number because it is at equal distance from previous prime (72549991) and next prime (72550019).

It is not a de Polignac number, because 72550005 - 2⁴ = 72549989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219684 + ... + 220013.

It is an arithmetic number, because the mean of its divisors is an integer number (7914564).

Almost surely, 2^72550005 is an apocalyptic number.

It is an amenable number.

72550005 is a deficient number, since it is larger than the sum of its proper divisors (54083019).

72550005 is a wasteful number, since it uses less digits than its factorization.

72550005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439716.

The product of its (nonzero) digits is 1750, while the sum is 24.

The square root of 72550005 is about 8517.6290715198. The cubic root of 72550005 is about 417.0733902309.

The spelling of 72550005 in words is "seventy-two million, five hundred fifty thousand, five".