72340501 has 4 divisors (see below), whose sum is σ = 72450604. Its totient is φ = 72230400.

The previous prime is 72340493. The next prime is 72340519. The reversal of 72340501 is 10504327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10504327 = 67 ⋅156781.

It can be written as a sum of positive squares in 2 ways, for example, as 56927025 + 15413476 = 7545^2 + 3926^2 .

It is a cyclic number.

It is not a de Polignac number, because 72340501 - 2³ = 72340493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72340901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54060 + ... + 55381.

It is an arithmetic number, because the mean of its divisors is an integer number (18112651).

Almost surely, 2^72340501 is an apocalyptic number.

It is an amenable number.

72340501 is a deficient number, since it is larger than the sum of its proper divisors (110103).

72340501 is a wasteful number, since it uses less digits than its factorization.

72340501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110102.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 72340501 is about 8505.3219221850. The cubic root of 72340501 is about 416.6715396408.

Adding to 72340501 its reverse (10504327), we get a palindrome (82844828).

The spelling of 72340501 in words is "seventy-two million, three hundred forty thousand, five hundred one".