215435053 has 18 divisors (see below), whose sum is σ = 235368846. Its totient is φ = 197016624.

The previous prime is 215435047. The next prime is 215435081. The reversal of 215435053 is 350534512.

It can be written as a sum of positive squares in only one way, i.e., 209612484 + 5822569 = 14478^2 + 2413^2 .

It is not a de Polignac number, because 215435053 - 2¹⁷ = 215303981 is a prime.

It is a super-2 number, since 2×215435053² = 92824524122225618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215435023) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1696276 + ... + 1696402.

It is an arithmetic number, because the mean of its divisors is an integer number (13076047).

Almost surely, 2^215435053 is an apocalyptic number.

It is an amenable number.

215435053 is a deficient number, since it is larger than the sum of its proper divisors (19933793).

215435053 is an equidigital number, since it uses as much as digits as its factorization.

215435053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 215435053 is about 14677.7059856096. The cubic root of 215435053 is about 599.4764442077.

Adding to 215435053 its reverse (350534512), we get a palindrome (565969565).

The spelling of 215435053 in words is "two hundred fifteen million, four hundred thirty-five thousand, fifty-three".