2501453221 has 4 divisors (see below), whose sum is σ = 2515428000. Its totient is φ = 2487478444.

The previous prime is 2501453183. The next prime is 2501453231. The reversal of 2501453221 is 1223541052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2501453221 - 2⁷ = 2501453093 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 (2501453231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6987121 + ... + 6987478.

It is an arithmetic number, because the mean of its divisors is an integer number (628857000).

Almost surely, 2^2501453221 is an apocalyptic number.

It is an amenable number.

2501453221 is a deficient number, since it is larger than the sum of its proper divisors (13974779).

2501453221 is a wasteful number, since it uses less digits than its factorization.

2501453221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13974778.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2501453221 is about 50014.5300987623. The cubic root of 2501453221 is about 1357.4717339377.

Adding to 2501453221 its reverse (1223541052), we get a palindrome (3724994273).

The spelling of 2501453221 in words is "two billion, five hundred one million, four hundred fifty-three thousand, two hundred twenty-one".