87538123 has 4 divisors (see below), whose sum is σ = 89021880. Its totient is φ = 86054368.

The previous prime is 87538081. The next prime is 87538127. The reversal of 87538123 is 32183578.

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-87538123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87538127) 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 3 ways as a sum of consecutive naturals, for example, 741790 + ... + 741907.

It is an arithmetic number, because the mean of its divisors is an integer number (22255470).

Almost surely, 2^87538123 is an apocalyptic number.

87538123 is a deficient number, since it is larger than the sum of its proper divisors (1483757).

87538123 is a wasteful number, since it uses less digits than its factorization.

87538123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483756.

The product of its digits is 40320, while the sum is 37.

The square root of 87538123 is about 9356.1810050896. The cubic root of 87538123 is about 444.0164668703.

The spelling of 87538123 in words is "eighty-seven million, five hundred thirty-eight thousand, one hundred twenty-three".