72316451 has 8 divisors (see below), whose sum is σ = 76201680. Its totient is φ = 68439168.

The previous prime is 72316429. The next prime is 72316457. The reversal of 72316451 is 15461327.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72316451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72316457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30335 + ... + 32631.

It is an arithmetic number, because the mean of its divisors is an integer number (9525210).

Almost surely, 2^72316451 is an apocalyptic number.

72316451 is a deficient number, since it is larger than the sum of its proper divisors (3885229).

72316451 is a wasteful number, since it uses less digits than its factorization.

72316451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3973.

The product of its digits is 5040, while the sum is 29.

The square root of 72316451 is about 8503.9079839801. The cubic root of 72316451 is about 416.6253596029.

Adding to 72316451 its reverse (15461327), we get a palindrome (87777778).

The spelling of 72316451 in words is "seventy-two million, three hundred sixteen thousand, four hundred fifty-one".