87942533 has 16 divisors (see below), whose sum is σ = 102076416. Its totient is φ = 74211120.

The previous prime is 87942511. The next prime is 87942557. The reversal of 87942533 is 33524978.

It is a cyclic number.

It is not a de Polignac number, because 87942533 - 2¹⁴ = 87926149 is a prime.

It is a super-2 number, since 2×87942533² = 15467778220912178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87942433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203828 + ... + 204258.

It is an arithmetic number, because the mean of its divisors is an integer number (6379776).

Almost surely, 2^87942533 is an apocalyptic number.

It is an amenable number.

87942533 is a deficient number, since it is larger than the sum of its proper divisors (14133883).

87942533 is a wasteful number, since it uses less digits than its factorization.

87942533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824.

The product of its digits is 181440, while the sum is 41.

The square root of 87942533 is about 9377.7680180307. The cubic root of 87942533 is about 444.6991747090.

The spelling of 87942533 in words is "eighty-seven million, nine hundred forty-two thousand, five hundred thirty-three".