216104501 has 2 divisors, whose sum is σ = 216104502. Its totient is φ = 216104500.

The previous prime is 216104437. The next prime is 216104509. The reversal of 216104501 is 105401612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212868100 + 3236401 = 14590^2 + 1799^2 .

It is a cyclic number.

It is not a de Polignac number, because 216104501 - 2⁶ = 216104437 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216104509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108052250 + 108052251.

It is an arithmetic number, because the mean of its divisors is an integer number (108052251).

Almost surely, 2^216104501 is an apocalyptic number.

It is an amenable number.

216104501 is a deficient number, since it is larger than the sum of its proper divisors (1).

216104501 is an equidigital number, since it uses as much as digits as its factorization.

216104501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 216104501 is about 14700.4932230181. The cubic root of 216104501 is about 600.0967445852.

The spelling of 216104501 in words is "two hundred sixteen million, one hundred four thousand, five hundred one".