87534427 has 4 divisors (see below), whose sum is σ = 87590440. Its totient is φ = 87478416.

The previous prime is 87534397. The next prime is 87534431. The reversal of 87534427 is 72443578.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72443578 = 2 ⋅36221789.

It is a cyclic number.

It is not a de Polignac number, because 87534427 - 2⁷ = 87534299 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87534427.

It is not an unprimeable number, because it can be changed into a prime (87534487) 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, 25593 + ... + 28810.

It is an arithmetic number, because the mean of its divisors is an integer number (21897610).

Almost surely, 2^87534427 is an apocalyptic number.

87534427 is a deficient number, since it is larger than the sum of its proper divisors (56013).

87534427 is a wasteful number, since it uses less digits than its factorization.

87534427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56012.

The product of its digits is 188160, while the sum is 40.

The square root of 87534427 is about 9355.9834865181. The cubic root of 87534427 is about 444.0102177531.

The spelling of 87534427 in words is "eighty-seven million, five hundred thirty-four thousand, four hundred twenty-seven".