2215420533 has 6 divisors (see below), whose sum is σ = 3200051894. Its totient is φ = 1476947016.

The previous prime is 2215420507. The next prime is 2215420541. The reversal of 2215420533 is 3350245122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2109289329 + 106131204 = 45927^2 + 10302^2 .

It is not a de Polignac number, because 2215420533 - 2⁶ = 2215420469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2215420497 and 2215420506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215420553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123078910 + ... + 123078927.

Almost surely, 2^2215420533 is an apocalyptic number.

It is an amenable number.

2215420533 is a deficient number, since it is larger than the sum of its proper divisors (984631361).

2215420533 is a wasteful number, since it uses less digits than its factorization.

2215420533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246157843 (or 246157840 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 2215420533 is about 47068.2539829129. The cubic root of 2215420533 is about 1303.6231340723.

Adding to 2215420533 its reverse (3350245122), we get a palindrome (5565665655).

The spelling of 2215420533 in words is "two billion, two hundred fifteen million, four hundred twenty thousand, five hundred thirty-three".