87542987 has 8 divisors (see below), whose sum is σ = 101420256. Its totient is φ = 74008512.

The previous prime is 87542963. The next prime is 87543007. The reversal of 87542987 is 78924578.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87542987 - 2⁸ = 87542731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87542947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85148 + ... + 86169.

It is an arithmetic number, because the mean of its divisors is an integer number (12677532).

Almost surely, 2^87542987 is an apocalyptic number.

87542987 is a deficient number, since it is larger than the sum of its proper divisors (13877269).

87542987 is a wasteful number, since it uses less digits than its factorization.

87542987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171397.

The product of its digits is 1128960, while the sum is 50.

The square root of 87542987 is about 9356.4409365955. The cubic root of 87542987 is about 444.0246905486.

The spelling of 87542987 in words is "eighty-seven million, five hundred forty-two thousand, nine hundred eighty-seven".