87146525 has 12 divisors (see below), whose sum is σ = 110698644. Its totient is φ = 68016000.

The previous prime is 87146519. The next prime is 87146533. The reversal of 87146525 is 52564178.

It can be written as a sum of positive squares in 6 ways, for example, as 19545241 + 67601284 = 4421^2 + 8222^2 .

It is a de Polignac number, because none of the positive numbers 2^k-87146525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41486 + ... + 43535.

It is an arithmetic number, because the mean of its divisors is an integer number (9224887).

Almost surely, 2^87146525 is an apocalyptic number.

It is an amenable number.

87146525 is a deficient number, since it is larger than the sum of its proper divisors (23552119).

87146525 is a wasteful number, since it uses less digits than its factorization.

87146525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85072 (or 85067 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 87146525 is about 9335.2303131739. The cubic root of 87146525 is about 443.3533809817.

The spelling of 87146525 in words is "eighty-seven million, one hundred forty-six thousand, five hundred twenty-five".