864952550 has 192 divisors, whose sum is σ = 2125578240. Its totient is φ = 254016000.

The previous prime is 864952531. The next prime is 864952591. The reversal of 864952550 is 55259468.

It is a hoax number, since the sum of its digits (44) 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 polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6810587 + ... + 6810713.

It is an arithmetic number, because the mean of its divisors is an integer number (11070720).

Almost surely, 2^864952550 is an apocalyptic number.

864952550 is an abundant number, since it is smaller than the sum of its proper divisors (1260625690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864952550 is a wasteful number, since it uses less digits than its factorization.

864952550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 44.

The square root of 864952550 is about 29410.0756544420. The cubic root of 864952550 is about 952.7905208867.

The spelling of 864952550 in words is "eight hundred sixty-four million, nine hundred fifty-two thousand, five hundred fifty".