87551829 has 24 divisors (see below), whose sum is σ = 134825600. Its totient is φ = 54587520.

The previous prime is 87551801. The next prime is 87551837. The reversal of 87551829 is 92815578.

It is a happy number.

It is not a de Polignac number, because 87551829 - 2⁵ = 87551797 is a prime.

It is a super-3 number, since 3×87551829³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87551129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10269 + ... + 16749.

Almost surely, 2^87551829 is an apocalyptic number.

It is an amenable number.

87551829 is a deficient number, since it is larger than the sum of its proper divisors (47273771).

87551829 is a wasteful number, since it uses less digits than its factorization.

87551829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6585 (or 6582 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 87551829 is about 9356.9134333924. The cubic root of 87551829 is about 444.0396391442.

The spelling of 87551829 in words is "eighty-seven million, five hundred fifty-one thousand, eight hundred twenty-nine".