87449525 has 12 divisors (see below), whose sum is σ = 108555552. Its totient is φ = 69883440.

The previous prime is 87449521. The next prime is 87449567. The reversal of 87449525 is 52594478.

It is a happy number.

It is not a de Polignac number, because 87449525 - 2² = 87449521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87449521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37442 + ... + 39708.

It is an arithmetic number, because the mean of its divisors is an integer number (9046296).

Almost surely, 2^87449525 is an apocalyptic number.

It is an amenable number.

87449525 is a deficient number, since it is larger than the sum of its proper divisors (21106027).

87449525 is a wasteful number, since it uses less digits than its factorization.

87449525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3820 (or 3815 counting only the distinct ones).

The product of its digits is 403200, while the sum is 44.

The square root of 87449525 is about 9351.4450754950. The cubic root of 87449525 is about 443.8666188239.

The spelling of 87449525 in words is "eighty-seven million, four hundred forty-nine thousand, five hundred twenty-five".