215054421 has 16 divisors (see below), whose sum is σ = 290594304. Its totient is φ = 141452784.

The previous prime is 215054383. The next prime is 215054429. The reversal of 215054421 is 124450512.

215054421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 215054421 - 2¹³ = 215046229 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 215054391 and 215054400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215054429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93730 + ... + 95996.

It is an arithmetic number, because the mean of its divisors is an integer number (18162144).

Almost surely, 2^215054421 is an apocalyptic number.

It is an amenable number.

215054421 is a deficient number, since it is larger than the sum of its proper divisors (75539883).

215054421 is a wasteful number, since it uses less digits than its factorization.

215054421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 215054421 is about 14664.7339218958. The cubic root of 215054421 is about 599.1231831668.

The spelling of 215054421 in words is "two hundred fifteen million, fifty-four thousand, four hundred twenty-one".