72542311 has 8 divisors (see below), whose sum is σ = 77073120. Its totient is φ = 68146848.

The previous prime is 72542269. The next prime is 72542317. The reversal of 72542311 is 11324527.

It is a happy number.

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 72542311 - 2¹⁵ = 72509543 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 (72542317) 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 7 ways as a sum of consecutive naturals, for example, 32731 + ... + 34876.

It is an arithmetic number, because the mean of its divisors is an integer number (9634140).

Almost surely, 2^72542311 is an apocalyptic number.

72542311 is a deficient number, since it is larger than the sum of its proper divisors (4530809).

72542311 is a wasteful number, since it uses less digits than its factorization.

72542311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67673.

The product of its digits is 1680, while the sum is 25.

The square root of 72542311 is about 8517.1774080384. The cubic root of 72542311 is about 417.0586460274.

Adding to 72542311 its reverse (11324527), we get a palindrome (83866838).

The spelling of 72542311 in words is "seventy-two million, five hundred forty-two thousand, three hundred eleven".