87872511 has 16 divisors (see below), whose sum is σ = 125072640. Its totient is φ = 54714240.

The previous prime is 87872501. The next prime is 87872527. The reversal of 87872511 is 11527878.

It is not a de Polignac number, because 87872511 - 2⁵ = 87872479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87872511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87872501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6810 + ... + 14903.

It is an arithmetic number, because the mean of its divisors is an integer number (7817040).

Almost surely, 2^87872511 is an apocalyptic number.

87872511 is a deficient number, since it is larger than the sum of its proper divisors (37200129).

87872511 is a wasteful number, since it uses less digits than its factorization.

87872511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21806.

The product of its digits is 31360, while the sum is 39.

The square root of 87872511 is about 9374.0338702183. The cubic root of 87872511 is about 444.5811165761.

The spelling of 87872511 in words is "eighty-seven million, eight hundred seventy-two thousand, five hundred eleven".