86155772 has 6 divisors (see below), whose sum is σ = 150772608. Its totient is φ = 43077884.

The previous prime is 86155757. The next prime is 86155777. The reversal of 86155772 is 27755168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86155777) 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, 10769468 + ... + 10769475.

It is an arithmetic number, because the mean of its divisors is an integer number (25128768).

Almost surely, 2^86155772 is an apocalyptic number.

It is an amenable number.

86155772 is a deficient number, since it is larger than the sum of its proper divisors (64616836).

86155772 is a wasteful number, since it uses less digits than its factorization.

86155772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21538947 (or 21538945 counting only the distinct ones).

The product of its digits is 117600, while the sum is 41.

The square root of 86155772 is about 9282.0133591802. The cubic root of 86155772 is about 441.6668387484. Note that the first 3 decimals are identical.

The spelling of 86155772 in words is "eighty-six million, one hundred fifty-five thousand, seven hundred seventy-two".