87132530 has 32 divisors (see below), whose sum is σ = 165337200. Its totient is φ = 33010432.

The previous prime is 87132527. The next prime is 87132569. The reversal of 87132530 is 3523178.

It can be written as a sum of positive squares in 8 ways, for example, as 36566209 + 50566321 = 6047^2 + 7111^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 87132493 and 87132502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12536 + ... + 18204.

Almost surely, 2^87132530 is an apocalyptic number.

87132530 is a deficient number, since it is larger than the sum of its proper divisors (78204670).

87132530 is a wasteful number, since it uses less digits than its factorization.

87132530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5758.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 87132530 is about 9334.4807032850. The cubic root of 87132530 is about 443.3296467680.

The spelling of 87132530 in words is "eighty-seven million, one hundred thirty-two thousand, five hundred thirty".