72044651 has 24 divisors (see below), whose sum is σ = 88602624. Its totient is φ = 58317840.

The previous prime is 72044641. The next prime is 72044659. The reversal of 72044651 is 15644027.

It is not a de Polignac number, because 72044651 - 2¹⁸ = 71782507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72044659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64766 + ... + 65868.

It is an arithmetic number, because the mean of its divisors is an integer number (3691776).

Almost surely, 2^72044651 is an apocalyptic number.

72044651 is a deficient number, since it is larger than the sum of its proper divisors (16557973).

72044651 is a wasteful number, since it uses less digits than its factorization.

72044651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191 (or 1184 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 72044651 is about 8487.9120518535. The cubic root of 72044651 is about 416.1027448233.

Adding to 72044651 its reverse (15644027), we get a palindrome (87688678).

The spelling of 72044651 in words is "seventy-two million, forty-four thousand, six hundred fifty-one".