216011550 has 48 divisors (see below), whose sum is σ = 550201392. Its totient is φ = 56044800.

The previous prime is 216011539. The next prime is 216011557. The reversal of 216011550 is 55110612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216011557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13911 + ... + 25010.

It is an arithmetic number, because the mean of its divisors is an integer number (11462529).

Almost surely, 2^216011550 is an apocalyptic number.

216011550 is an abundant number, since it is smaller than the sum of its proper divisors (334189842).

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

216011550 is a wasteful number, since it uses less digits than its factorization.

216011550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38973 (or 38968 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 216011550 is about 14697.3313904260. The cubic root of 216011550 is about 600.0106942538.

The spelling of 216011550 in words is "two hundred sixteen million, eleven thousand, five hundred fifty".