72541277 has 4 divisors (see below), whose sum is σ = 72562140. Its totient is φ = 72520416.

The previous prime is 72541237. The next prime is 72541279. The reversal of 72541277 is 77214527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36132121 + 36409156 = 6011^2 + 6034^2 .

It is a cyclic number.

It is not a de Polignac number, because 72541277 - 2⁶ = 72541213 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 (72541279) 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, 3818 + ... + 12635.

It is an arithmetic number, because the mean of its divisors is an integer number (18140535).

Almost surely, 2^72541277 is an apocalyptic number.

It is an amenable number.

72541277 is a deficient number, since it is larger than the sum of its proper divisors (20863).

72541277 is a wasteful number, since it uses less digits than its factorization.

72541277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20862.

The product of its digits is 27440, while the sum is 35.

The square root of 72541277 is about 8517.1167069613. The cubic root of 72541277 is about 417.0566644680.

The spelling of 72541277 in words is "seventy-two million, five hundred forty-one thousand, two hundred seventy-seven".