2215397533 has 4 divisors (see below), whose sum is σ = 2275273180. Its totient is φ = 2155521888.

The previous prime is 2215397531. The next prime is 2215397543. The reversal of 2215397533 is 3357935122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3357935122 = 2 ⋅1678967561.

It can be written as a sum of positive squares in 2 ways, for example, as 1035681124 + 1179716409 = 32182^2 + 34347^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215397533 - 2¹ = 2215397531 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 (2215397531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29937768 + ... + 29937841.

It is an arithmetic number, because the mean of its divisors is an integer number (568818295).

Almost surely, 2^2215397533 is an apocalyptic number.

It is an amenable number.

2215397533 is a deficient number, since it is larger than the sum of its proper divisors (59875647).

2215397533 is an equidigital number, since it uses as much as digits as its factorization.

2215397533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59875646.

The product of its digits is 170100, while the sum is 40.

The square root of 2215397533 is about 47068.0096562410. The cubic root of 2215397533 is about 1303.6186227489.

The spelling of 2215397533 in words is "two billion, two hundred fifteen million, three hundred ninety-seven thousand, five hundred thirty-three".