2521727293 has 4 divisors (see below), whose sum is σ = 2523023100. Its totient is φ = 2520431488.

The previous prime is 2521727287. The next prime is 2521727311. The reversal of 2521727293 is 3927271252.

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 2055080889 + 466646404 = 45333^2 + 21602^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521727293 - 2²⁹ = 1984856381 is a prime.

It is a super-2 number, since 2×2521727293² = 12718217080522215698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521727203) 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, 644980 + ... + 648877.

It is an arithmetic number, because the mean of its divisors is an integer number (630755775).

Almost surely, 2^2521727293 is an apocalyptic number.

It is an amenable number.

2521727293 is a deficient number, since it is larger than the sum of its proper divisors (1295807).

2521727293 is a wasteful number, since it uses less digits than its factorization.

2521727293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295806.

The product of its digits is 105840, while the sum is 40.

The square root of 2521727293 is about 50216.8028950470. The cubic root of 2521727293 is about 1361.1292691293.

The spelling of 2521727293 in words is "two billion, five hundred twenty-one million, seven hundred twenty-seven thousand, two hundred ninety-three".