87542577 has 12 divisors (see below), whose sum is σ = 131948544. Its totient is φ = 55824120.

The previous prime is 87542513. The next prime is 87542599. The reversal of 87542577 is 77524578.

87542577 is a `hidden beast` number, since 8 + 75 + 4 + 2 + 577 = 666.

It is not a de Polignac number, because 87542577 - 2⁶ = 87542513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87502577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211249 + ... + 211662.

It is an arithmetic number, because the mean of its divisors is an integer number (10995712).

Almost surely, 2^87542577 is an apocalyptic number.

It is an amenable number.

87542577 is a deficient number, since it is larger than the sum of its proper divisors (44405967).

87542577 is a wasteful number, since it uses less digits than its factorization.

87542577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422940 (or 422937 counting only the distinct ones).

The product of its digits is 548800, while the sum is 45.

The square root of 87542577 is about 9356.4190265293. The cubic root of 87542577 is about 444.0239973638.

The spelling of 87542577 in words is "eighty-seven million, five hundred forty-two thousand, five hundred seventy-seven".