80861552 has 20 divisors (see below), whose sum is σ = 156942336. Its totient is φ = 40360320.

The previous prime is 80861533. The next prime is 80861591. The reversal of 80861552 is 25516808.

It is a happy number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5777 + ... + 13967.

Almost surely, 2^80861552 is an apocalyptic number.

It is an amenable number.

80861552 is a deficient number, since it is larger than the sum of its proper divisors (76080784).

80861552 is a wasteful number, since it uses less digits than its factorization.

80861552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8816 (or 8810 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 80861552 is about 8992.3051549644. The cubic root of 80861552 is about 432.4282162263.

The spelling of 80861552 in words is "eighty million, eight hundred sixty-one thousand, five hundred fifty-two".