2545102221 has 8 divisors (see below), whose sum is σ = 3404312640. Its totient is φ = 1691313312.

The previous prime is 2545102187. The next prime is 2545102223. The reversal of 2545102221 is 1222015452.

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

It is not a de Polignac number, because 2545102221 - 2¹³ = 2545094029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2545102191 and 2545102200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545102223) 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, 1354281 + ... + 1356158.

It is an arithmetic number, because the mean of its divisors is an integer number (425539080).

Almost surely, 2^2545102221 is an apocalyptic number.

It is an amenable number.

2545102221 is a deficient number, since it is larger than the sum of its proper divisors (859210419).

2545102221 is a wasteful number, since it uses less digits than its factorization.

2545102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710755.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2545102221 is about 50449.0061448191. The cubic root of 2545102221 is about 1365.3219635268.

Adding to 2545102221 its reverse (1222015452), we get a palindrome (3767117673).

The spelling of 2545102221 in words is "two billion, five hundred forty-five million, one hundred two thousand, two hundred twenty-one".