2521311284 has 12 divisors (see below), whose sum is σ = 4444502244. Its totient is φ = 1251453504.

The previous prime is 2521311269. The next prime is 2521311337. The reversal of 2521311284 is 4821131252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2136288400 + 385022884 = 46220^2 + 19622^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2299919 + ... + 2301014.

It is an arithmetic number, because the mean of its divisors is an integer number (370375187).

Almost surely, 2^2521311284 is an apocalyptic number.

It is an amenable number.

2521311284 is a deficient number, since it is larger than the sum of its proper divisors (1923190960).

2521311284 is a wasteful number, since it uses less digits than its factorization.

2521311284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4601074 (or 4601072 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 2521311284 is about 50212.6605947146. The cubic root of 2521311284 is about 1361.0544165778.

The spelling of 2521311284 in words is "two billion, five hundred twenty-one million, three hundred eleven thousand, two hundred eighty-four".