72446051 has 4 divisors (see below), whose sum is σ = 72463704. Its totient is φ = 72428400.

The previous prime is 72446009. The next prime is 72446063. The reversal of 72446051 is 15064427.

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

It is a cyclic number.

It is not a de Polignac number, because 72446051 - 2¹⁰ = 72445027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72446351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911 + ... + 12071.

It is an arithmetic number, because the mean of its divisors is an integer number (18115926).

Almost surely, 2^72446051 is an apocalyptic number.

72446051 is a deficient number, since it is larger than the sum of its proper divisors (17653).

72446051 is a wasteful number, since it uses less digits than its factorization.

72446051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17652.

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

The square root of 72446051 is about 8511.5245990363. The cubic root of 72446051 is about 416.8740924196.

The spelling of 72446051 in words is "seventy-two million, four hundred forty-six thousand, fifty-one".