72087261 has 8 divisors (see below), whose sum is σ = 97930080. Its totient is φ = 47151312.

The previous prime is 72087251. The next prime is 72087269. The reversal of 72087261 is 16278027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72087261 - 2⁵ = 72087229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72087269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226531 + ... + 226848.

It is an arithmetic number, because the mean of its divisors is an integer number (12241260).

Almost surely, 2^72087261 is an apocalyptic number.

It is an amenable number.

72087261 is a deficient number, since it is larger than the sum of its proper divisors (25842819).

72087261 is a wasteful number, since it uses less digits than its factorization.

72087261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453435.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 72087261 is about 8490.4217209748. The cubic root of 72087261 is about 416.1847617550.

The spelling of 72087261 in words is "seventy-two million, eighty-seven thousand, two hundred sixty-one".