72643053 has 16 divisors (see below), whose sum is σ = 110850560. Its totient is φ = 41451696.

The previous prime is 72643003. The next prime is 72643073. The reversal of 72643053 is 35034627.

It is not a de Polignac number, because 72643053 - 2⁸ = 72642797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72643053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72643003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16026 + ... + 20052.

It is an arithmetic number, because the mean of its divisors is an integer number (6928160).

Almost surely, 2^72643053 is an apocalyptic number.

It is an amenable number.

72643053 is a deficient number, since it is larger than the sum of its proper divisors (38207507).

72643053 is a wasteful number, since it uses less digits than its factorization.

72643053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4896.

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 72643053 is about 8523.0894046701. The cubic root of 72643053 is about 417.2516179503.

The spelling of 72643053 in words is "seventy-two million, six hundred forty-three thousand, fifty-three".