72054166 has 4 divisors (see below), whose sum is σ = 108081252. Its totient is φ = 36027082.

The previous prime is 72054161. The next prime is 72054217. The reversal of 72054166 is 66145027.

It is a happy number.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72054161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18013540 + ... + 18013543.

It is an arithmetic number, because the mean of its divisors is an integer number (27020313).

Almost surely, 2^72054166 is an apocalyptic number.

72054166 is a deficient number, since it is larger than the sum of its proper divisors (36027086).

72054166 is a wasteful number, since it uses less digits than its factorization.

72054166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36027085.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 72054166 is about 8488.4725363283. The cubic root of 72054166 is about 416.1210623679.

The spelling of 72054166 in words is "seventy-two million, fifty-four thousand, one hundred sixty-six".