215145093 has 8 divisors (see below), whose sum is σ = 291722400. Its totient is φ = 140998928.

The previous prime is 215145083. The next prime is 215145097. The reversal of 215145093 is 390541512.

215145093 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215145093 - 2¹⁴ = 215128709 is a prime.

It is a super-2 number, since 2×215145093² = 92574822083957298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 215145093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215145097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607578 + ... + 607931.

It is an arithmetic number, because the mean of its divisors is an integer number (36465300).

Almost surely, 2^215145093 is an apocalyptic number.

It is an amenable number.

215145093 is a deficient number, since it is larger than the sum of its proper divisors (76577307).

215145093 is a wasteful number, since it uses less digits than its factorization.

215145093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215571.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 215145093 is about 14667.8250944031. The cubic root of 215145093 is about 599.2073728091.

The spelling of 215145093 in words is "two hundred fifteen million, one hundred forty-five thousand, ninety-three".