72062261 has 4 divisors (see below), whose sum is σ = 72119712. Its totient is φ = 72004812.

The previous prime is 72062257. The next prime is 72062267. The reversal of 72062261 is 16226027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72062261 - 2² = 72062257 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 72062261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72062267) 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, 26801 + ... + 29366.

It is an arithmetic number, because the mean of its divisors is an integer number (18029928).

Almost surely, 2^72062261 is an apocalyptic number.

It is an amenable number.

72062261 is a deficient number, since it is larger than the sum of its proper divisors (57451).

72062261 is a wasteful number, since it uses less digits than its factorization.

72062261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57450.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 72062261 is about 8488.9493460616. The cubic root of 72062261 is about 416.1366449685.

Adding to 72062261 its reverse (16226027), we get a palindrome (88288288).

The spelling of 72062261 in words is "seventy-two million, sixty-two thousand, two hundred sixty-one".