87542227 has 4 divisors (see below), whose sum is σ = 87581376. Its totient is φ = 87503080.

The previous prime is 87542173. The next prime is 87542237. The reversal of 87542227 is 72224578.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87542227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87542237) 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, 16003 + ... + 20764.

It is an arithmetic number, because the mean of its divisors is an integer number (21895344).

Almost surely, 2^87542227 is an apocalyptic number.

87542227 is a deficient number, since it is larger than the sum of its proper divisors (39149).

87542227 is a wasteful number, since it uses less digits than its factorization.

87542227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39148.

The product of its digits is 62720, while the sum is 37.

The square root of 87542227 is about 9356.4003227737. The cubic root of 87542227 is about 444.0234056189.

The spelling of 87542227 in words is "eighty-seven million, five hundred forty-two thousand, two hundred twenty-seven".