2721252253 has 4 divisors (see below), whose sum is σ = 2746217980. Its totient is φ = 2696286528.

The previous prime is 2721252251. The next prime is 2721252277. The reversal of 2721252253 is 3522521272.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 795973369 + 1925278884 = 28213^2 + 43878^2 .

It is a cyclic number.

It is not a de Polignac number, because 2721252253 - 2¹ = 2721252251 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 (2721252251) 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, 12482700 + ... + 12482917.

It is an arithmetic number, because the mean of its divisors is an integer number (686554495).

Almost surely, 2^2721252253 is an apocalyptic number.

It is an amenable number.

2721252253 is a deficient number, since it is larger than the sum of its proper divisors (24965727).

2721252253 is a wasteful number, since it uses less digits than its factorization.

2721252253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24965726.

The product of its digits is 16800, while the sum is 31.

The square root of 2721252253 is about 52165.6232877553. The cubic root of 2721252253 is about 1396.1205956319.

The spelling of 2721252253 in words is "two billion, seven hundred twenty-one million, two hundred fifty-two thousand, two hundred fifty-three".