87130526 has 12 divisors (see below), whose sum is σ = 152034048. Its totient is φ = 37341612.

The previous prime is 87130507. The next prime is 87130531. The reversal of 87130526 is 62503178.

It is a happy number.

It is a super-2 number, since 2×87130526² = 15183457122073352, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 87130492 and 87130501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 444446 + ... + 444641.

It is an arithmetic number, because the mean of its divisors is an integer number (12669504).

Almost surely, 2^87130526 is an apocalyptic number.

87130526 is a deficient number, since it is larger than the sum of its proper divisors (64903522).

87130526 is a wasteful number, since it uses less digits than its factorization.

87130526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889103 (or 889096 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 87130526 is about 9334.3733587210. The cubic root of 87130526 is about 443.3262479631.

The spelling of 87130526 in words is "eighty-seven million, one hundred thirty thousand, five hundred twenty-six".