87550 has 24 divisors (see below), whose sum is σ = 174096. Its totient is φ = 32640.

The previous prime is 87547. The next prime is 87553. The reversal of 87550 is 5578.

It is an interprime number because it is at equal distance from previous prime (87547) and next prime (87553).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 799 + ... + 901.

It is an arithmetic number, because the mean of its divisors is an integer number (7254).

2⁸⁷⁵⁵⁰ is an apocalyptic number.

87550 is a deficient number, since it is larger than the sum of its proper divisors (86546).

87550 is a wasteful number, since it uses less digits than its factorization.

87550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 87550 is about 295.8884925103. Note that the first 3 decimals coincide. The cubic root of 87550 is about 44.4036547055.

The spelling of 87550 in words is "eighty-seven thousand, five hundred fifty".