72815001 has 32 divisors (see below), whose sum is σ = 117669888. Its totient is φ = 39165120.

The previous prime is 72814993. The next prime is 72815003. The reversal of 72815001 is 10051827.

It is not a de Polignac number, because 72815001 - 2³ = 72814993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72815003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22576 + ... + 25598.

It is an arithmetic number, because the mean of its divisors is an integer number (3677184).

Almost surely, 2^72815001 is an apocalyptic number.

It is an amenable number.

72815001 is a deficient number, since it is larger than the sum of its proper divisors (44854887).

72815001 is a wasteful number, since it uses less digits than its factorization.

72815001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 72815001 is about 8533.1706299593. The cubic root of 72815001 is about 417.5805736897.

Adding to 72815001 its reverse (10051827), we get a palindrome (82866828).

The spelling of 72815001 in words is "seventy-two million, eight hundred fifteen thousand, one".