87547855 has 4 divisors (see below), whose sum is σ = 105057432. Its totient is φ = 70038280.

The previous prime is 87547853. The next prime is 87547907. The reversal of 87547855 is 55874578.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55874578 = 2 ⋅27937289.

It is not a de Polignac number, because 87547855 - 2¹ = 87547853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87547799 and 87547808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87547853) 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, 8754781 + ... + 8754790.

It is an arithmetic number, because the mean of its divisors is an integer number (26264358).

Almost surely, 2^87547855 is an apocalyptic number.

87547855 is a deficient number, since it is larger than the sum of its proper divisors (17509577).

87547855 is a wasteful number, since it uses less digits than its factorization.

87547855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17509576.

The product of its digits is 1568000, while the sum is 49.

The square root of 87547855 is about 9356.7010746310. The cubic root of 87547855 is about 444.0329206848.

The spelling of 87547855 in words is "eighty-seven million, five hundred forty-seven thousand, eight hundred fifty-five".