72045371 has 4 divisors (see below), whose sum is σ = 76283352. Its totient is φ = 67807392.

The previous prime is 72045341. The next prime is 72045377. The reversal of 72045371 is 17354027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17354027 = 271 ⋅64037.

It is a cyclic number.

It is not a de Polignac number, because 72045371 - 2¹⁰ = 72044347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72045377) 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, 2118965 + ... + 2118998.

It is an arithmetic number, because the mean of its divisors is an integer number (19070838).

Almost surely, 2^72045371 is an apocalyptic number.

72045371 is a deficient number, since it is larger than the sum of its proper divisors (4237981).

72045371 is a wasteful number, since it uses less digits than its factorization.

72045371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4237980.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 72045371 is about 8487.9544650051. The cubic root of 72045371 is about 416.1041309682.

Adding to 72045371 its reverse (17354027), we get a palindrome (89399398).

The spelling of 72045371 in words is "seventy-two million, forty-five thousand, three hundred seventy-one".