2521455131 has 4 divisors (see below), whose sum is σ = 2715413232. Its totient is φ = 2327497032.

The previous prime is 2521455103. The next prime is 2521455149. The reversal of 2521455131 is 1315541252.

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

It is a cyclic number.

It is not a de Polignac number, because 2521455131 - 2⁶ = 2521455067 is a prime.

It is a super-3 number, since 3×2521455131³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2521455094 and 2521455103.

It is not an unprimeable number, because it can be changed into a prime (2521455161) 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, 96979031 + ... + 96979056.

It is an arithmetic number, because the mean of its divisors is an integer number (678853308).

Almost surely, 2^2521455131 is an apocalyptic number.

2521455131 is a deficient number, since it is larger than the sum of its proper divisors (193958101).

2521455131 is a wasteful number, since it uses less digits than its factorization.

2521455131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193958100.

The product of its digits is 6000, while the sum is 29.

The square root of 2521455131 is about 50214.0929520787. The cubic root of 2521455131 is about 1361.0802999178.

Adding to 2521455131 its reverse (1315541252), we get a palindrome (3836996383).

The spelling of 2521455131 in words is "two billion, five hundred twenty-one million, four hundred fifty-five thousand, one hundred thirty-one".