72771545 has 16 divisors (see below), whose sum is σ = 108874368. Its totient is φ = 45363840.

The previous prime is 72771499. The next prime is 72771551. The reversal of 72771545 is 54517727.

It is not a de Polignac number, because 72771545 - 2⁸ = 72771289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72771499 and 72771508.

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, 94124 + ... + 94893.

It is an arithmetic number, because the mean of its divisors is an integer number (6804648).

Almost surely, 2^72771545 is an apocalyptic number.

It is an amenable number.

72771545 is a deficient number, since it is larger than the sum of its proper divisors (36102823).

72771545 is a wasteful number, since it uses less digits than its factorization.

72771545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189040.

The product of its digits is 68600, while the sum is 38.

The square root of 72771545 is about 8530.6239513883. The cubic root of 72771545 is about 417.4974864491.

The spelling of 72771545 in words is "seventy-two million, seven hundred seventy-one thousand, five hundred forty-five".