87089542 has 4 divisors (see below), whose sum is σ = 130634316. Its totient is φ = 43544770.

The previous prime is 87089539. The next prime is 87089551. The reversal of 87089542 is 24598078.

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

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 as a sum of consecutive naturals, namely, 21772384 + ... + 21772387.

It is an arithmetic number, because the mean of its divisors is an integer number (32658579).

Almost surely, 2^87089542 is an apocalyptic number.

87089542 is a deficient number, since it is larger than the sum of its proper divisors (43544774).

87089542 is a wasteful number, since it uses less digits than its factorization.

87089542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43544773.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 87089542 is about 9332.1777737032. The cubic root of 87089542 is about 443.2567272363.

The spelling of 87089542 in words is "eighty-seven million, eighty-nine thousand, five hundred forty-two".