87733121 has 8 divisors (see below), whose sum is σ = 100698624. Its totient is φ = 74875680.

The previous prime is 87733117. The next prime is 87733133. The reversal of 87733121 is 12133778.

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 87733121 - 2² = 87733117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87733171) 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, 25265 + ... + 28526.

It is an arithmetic number, because the mean of its divisors is an integer number (12587328).

Almost surely, 2^87733121 is an apocalyptic number.

It is an amenable number.

87733121 is a deficient number, since it is larger than the sum of its proper divisors (12965503).

87733121 is a wasteful number, since it uses less digits than its factorization.

87733121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54031.

The product of its digits is 7056, while the sum is 32.

The square root of 87733121 is about 9366.5960198997. The cubic root of 87733121 is about 444.3459161428.

Adding to 87733121 its reverse (12133778), we get a palindrome (99866899).

The spelling of 87733121 in words is "eighty-seven million, seven hundred thirty-three thousand, one hundred twenty-one".