72192541 has 4 divisors (see below), whose sum is σ = 72936892. Its totient is φ = 71448192.

The previous prime is 72192529. The next prime is 72192551. The reversal of 72192541 is 14529127.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18096516 + 54096025 = 4254^2 + 7355^2 .

It is a cyclic number.

It is not a de Polignac number, because 72192541 - 2¹¹ = 72190493 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 (72192551) 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, 372030 + ... + 372223.

It is an arithmetic number, because the mean of its divisors is an integer number (18234223).

Almost surely, 2^72192541 is an apocalyptic number.

It is an amenable number.

72192541 is a deficient number, since it is larger than the sum of its proper divisors (744351).

72192541 is an equidigital number, since it uses as much as digits as its factorization.

72192541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744350.

The product of its digits is 5040, while the sum is 31.

The square root of 72192541 is about 8496.6193865560. The cubic root of 72192541 is about 416.3872691886.

The spelling of 72192541 in words is "seventy-two million, one hundred ninety-two thousand, five hundred forty-one".