72405001 has 8 divisors (see below), whose sum is σ = 73543680. Its totient is φ = 71272032.

The previous prime is 72404999. The next prime is 72405013. The reversal of 72405001 is 10050427.

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 72405001 - 2¹ = 72404999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72405001.

It is not an unprimeable number, because it can be changed into a prime (72405031) 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, 29061 + ... + 31453.

It is an arithmetic number, because the mean of its divisors is an integer number (9192960).

Almost surely, 2^72405001 is an apocalyptic number.

It is an amenable number.

72405001 is a deficient number, since it is larger than the sum of its proper divisors (1138679).

72405001 is a wasteful number, since it uses less digits than its factorization.

72405001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 72405001 is about 8509.1128209702. The cubic root of 72405001 is about 416.7953399573.

Adding to 72405001 its reverse (10050427), we get a palindrome (82455428).

The spelling of 72405001 in words is "seventy-two million, four hundred five thousand, one".