87542917 has 8 divisors (see below), whose sum is σ = 109144512. Its totient is φ = 68215200.

The previous prime is 87542881. The next prime is 87542921. The reversal of 87542917 is 71924578.

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 87542917 - 2¹⁵ = 87510149 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 568384 + ... + 568537.

It is an arithmetic number, because the mean of its divisors is an integer number (13643064).

Almost surely, 2^87542917 is an apocalyptic number.

It is an amenable number.

87542917 is a deficient number, since it is larger than the sum of its proper divisors (21601595).

87542917 is a wasteful number, since it uses less digits than its factorization.

87542917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136939.

The product of its digits is 141120, while the sum is 43.

The square root of 87542917 is about 9356.4371958561. The cubic root of 87542917 is about 444.0245722001.

The spelling of 87542917 in words is "eighty-seven million, five hundred forty-two thousand, nine hundred seventeen".