87194056 has 8 divisors (see below), whose sum is σ = 163488870. Its totient is φ = 43597024.

The previous prime is 87194053. The next prime is 87194057. The reversal of 87194056 is 65049178.

It can be written as a sum of positive squares in only one way, i.e., 75864100 + 11329956 = 8710^2 + 3366^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×87194056² = 15205606803462272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87194053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5449621 + ... + 5449636.

Almost surely, 2^87194056 is an apocalyptic number.

It is an amenable number.

87194056 is a deficient number, since it is larger than the sum of its proper divisors (76294814).

87194056 is a wasteful number, since it uses less digits than its factorization.

87194056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10899263 (or 10899259 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 87194056 is about 9337.7757522871. The cubic root of 87194056 is about 443.4339701562.

The spelling of 87194056 in words is "eighty-seven million, one hundred ninety-four thousand, fifty-six".