215454023 has 4 divisors (see below), whose sum is σ = 217467720. Its totient is φ = 213440328.

The previous prime is 215454011. The next prime is 215454059. The reversal of 215454023 is 320454512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 215454023 - 2⁴ = 215454007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215453983 and 215454001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215454223) 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, 1006688 + ... + 1006901.

It is an arithmetic number, because the mean of its divisors is an integer number (54366930).

Almost surely, 2^215454023 is an apocalyptic number.

215454023 is a deficient number, since it is larger than the sum of its proper divisors (2013697).

215454023 is a wasteful number, since it uses less digits than its factorization.

215454023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013696.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 215454023 is about 14678.3521895341. The cubic root of 215454023 is about 599.4940392001.

The spelling of 215454023 in words is "two hundred fifteen million, four hundred fifty-four thousand, twenty-three".