72351017 has 8 divisors (see below), whose sum is σ = 73410624. Its totient is φ = 71296048.

The previous prime is 72351007. The next prime is 72351023. The reversal of 72351017 is 71015327.

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 72351017 - 2¹⁰ = 72349993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72351007) 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, 40883 + ... + 42615.

It is an arithmetic number, because the mean of its divisors is an integer number (9176328).

Almost surely, 2^72351017 is an apocalyptic number.

It is an amenable number.

72351017 is a deficient number, since it is larger than the sum of its proper divisors (1059607).

72351017 is a wasteful number, since it uses less digits than its factorization.

72351017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 72351017 is about 8505.9401008942. The cubic root of 72351017 is about 416.6917289103.

The spelling of 72351017 in words is "seventy-two million, three hundred fifty-one thousand, seventeen".