72194541 has 8 divisors (see below), whose sum is σ = 96528960. Its totient is φ = 47994912.

The previous prime is 72194519. The next prime is 72194581. The reversal of 72194541 is 14549127.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72194541 - 2⁷ = 72194413 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72194581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32440 + ... + 34593.

It is an arithmetic number, because the mean of its divisors is an integer number (12066120).

Almost surely, 2^72194541 is an apocalyptic number.

It is an amenable number.

72194541 is a deficient number, since it is larger than the sum of its proper divisors (24334419).

72194541 is a wasteful number, since it uses less digits than its factorization.

72194541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67395.

The product of its digits is 10080, while the sum is 33.

The square root of 72194541 is about 8496.7370796089. The cubic root of 72194541 is about 416.3911143081.

The spelling of 72194541 in words is "seventy-two million, one hundred ninety-four thousand, five hundred forty-one".