216127533 has 4 divisors (see below), whose sum is σ = 288170048. Its totient is φ = 144085020.

The previous prime is 216127519. The next prime is 216127537. The reversal of 216127533 is 335721612.

216127533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 216127533 - 2⁶ = 216127469 is a prime.

It is a super-2 number, since 2×216127533² = 93422221041332178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216127533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216127537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36021253 + ... + 36021258.

It is an arithmetic number, because the mean of its divisors is an integer number (72042512).

Almost surely, 2^216127533 is an apocalyptic number.

It is an amenable number.

216127533 is a deficient number, since it is larger than the sum of its proper divisors (72042515).

216127533 is an equidigital number, since it uses as much as digits as its factorization.

216127533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72042514.

The product of its digits is 7560, while the sum is 30.

The square root of 216127533 is about 14701.2765772228. The cubic root of 216127533 is about 600.1180628782.

The spelling of 216127533 in words is "two hundred sixteen million, one hundred twenty-seven thousand, five hundred thirty-three".