87481003 has 4 divisors (see below), whose sum is σ = 89614728. Its totient is φ = 85347280.

The previous prime is 87480973. The next prime is 87481007. The reversal of 87481003 is 30018478.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87481003 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87481007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066801 + ... + 1066882.

It is an arithmetic number, because the mean of its divisors is an integer number (22403682).

Almost surely, 2^87481003 is an apocalyptic number.

87481003 is a deficient number, since it is larger than the sum of its proper divisors (2133725).

87481003 is a wasteful number, since it uses less digits than its factorization.

87481003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133724.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 87481003 is about 9353.1279794516. The cubic root of 87481003 is about 443.9198699510.

The spelling of 87481003 in words is "eighty-seven million, four hundred eighty-one thousand, three".