216155050 has 12 divisors (see below), whose sum is σ = 402048486. Its totient is φ = 86462000.

The previous prime is 216155029. The next prime is 216155053. The reversal of 216155050 is 50551612.

It can be written as a sum of positive squares in 3 ways, for example, as 144024001 + 72131049 = 12001^2 + 8493^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (216155053) 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 in 5 ways as a sum of consecutive naturals, for example, 2161501 + ... + 2161600.

Almost surely, 2^216155050 is an apocalyptic number.

216155050 is a deficient number, since it is larger than the sum of its proper divisors (185893436).

216155050 is a wasteful number, since it uses less digits than its factorization.

216155050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4323113 (or 4323108 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 216155050 is about 14702.2124185444. The cubic root of 216155050 is about 600.1435304771.

The spelling of 216155050 in words is "two hundred sixteen million, one hundred fifty-five thousand, fifty".