72449951 has 8 divisors (see below), whose sum is σ = 83349504. Its totient is φ = 61687800.

The previous prime is 72449947. The next prime is 72449963. The reversal of 72449951 is 15994427.

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

It is a cyclic number.

It is not a de Polignac number, because 72449951 - 2² = 72449947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72449899 and 72449908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72449921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33215 + ... + 35328.

It is an arithmetic number, because the mean of its divisors is an integer number (10418688).

Almost surely, 2^72449951 is an apocalyptic number.

72449951 is a deficient number, since it is larger than the sum of its proper divisors (10899553).

72449951 is a wasteful number, since it uses less digits than its factorization.

72449951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68701.

The product of its digits is 90720, while the sum is 41.

The square root of 72449951 is about 8511.7536970944. The cubic root of 72449951 is about 416.8815728355.

The spelling of 72449951 in words is "seventy-two million, four hundred forty-nine thousand, nine hundred fifty-one".