72057505 has 32 divisors (see below), whose sum is σ = 98106624. Its totient is φ = 50409216.

The previous prime is 72057473. The next prime is 72057511. The reversal of 72057505 is 50575027.

It is not a de Polignac number, because 72057505 - 2⁵ = 72057473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234562 + ... + 234868.

It is an arithmetic number, because the mean of its divisors is an integer number (3065832).

Almost surely, 2^72057505 is an apocalyptic number.

It is an amenable number.

72057505 is a deficient number, since it is larger than the sum of its proper divisors (26049119).

72057505 is a wasteful number, since it uses less digits than its factorization.

72057505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505.

The product of its (nonzero) digits is 12250, while the sum is 31.

The square root of 72057505 is about 8488.6692125444. The cubic root of 72057505 is about 416.1274899711.

The spelling of 72057505 in words is "seventy-two million, fifty-seven thousand, five hundred five".