87528549 has 8 divisors (see below), whose sum is σ = 117189952. Its totient is φ = 58109760.

The previous prime is 87528517. The next prime is 87528559. The reversal of 87528549 is 94582578.

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

It is not a de Polignac number, because 87528549 - 2⁵ = 87528517 is a prime.

It is a super-2 number, since 2×87528549² = 15322493780090802, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87528498 and 87528507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87528559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59809 + ... + 61254.

It is an arithmetic number, because the mean of its divisors is an integer number (14648744).

Almost surely, 2^87528549 is an apocalyptic number.

It is an amenable number.

87528549 is a deficient number, since it is larger than the sum of its proper divisors (29661403).

87528549 is a wasteful number, since it uses less digits than its factorization.

87528549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121307.

The product of its digits is 806400, while the sum is 48.

The square root of 87528549 is about 9355.6693507199. The cubic root of 87528549 is about 444.0002789950. Note that the first 3 decimals are identical.

The spelling of 87528549 in words is "eighty-seven million, five hundred twenty-eight thousand, five hundred forty-nine".