215054101 has 12 divisors (see below), whose sum is σ = 224215276. Its totient is φ = 206115840.

The previous prime is 215054087. The next prime is 215054153. The reversal of 215054101 is 101450512.

It can be written as a sum of positive squares in 2 ways, for example, as 181980100 + 33074001 = 13490^2 + 5751^2 .

It is not a de Polignac number, because 215054101 - 2⁷ = 215053973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215054201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185941 + ... + 187093.

Almost surely, 2^215054101 is an apocalyptic number.

It is an amenable number.

215054101 is a deficient number, since it is larger than the sum of its proper divisors (9161175).

215054101 is an equidigital number, since it uses as much as digits as its factorization.

215054101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 215054101 is about 14664.7230113630. The cubic root of 215054101 is about 599.1228860025.

The spelling of 215054101 in words is "two hundred fifteen million, fifty-four thousand, one hundred one".