2521553842 has 8 divisors (see below), whose sum is σ = 3782814876. Its totient is φ = 1260615552.

The previous prime is 2521553831. The next prime is 2521553869. The reversal of 2521553842 is 2483551252.

It can be written as a sum of positive squares in 2 ways, for example, as 2434336921 + 87216921 = 49339^2 + 9339^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60103 + ... + 93034.

Almost surely, 2^2521553842 is an apocalyptic number.

2521553842 is a deficient number, since it is larger than the sum of its proper divisors (1261261034).

2521553842 is a wasteful number, since it uses less digits than its factorization.

2521553842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161372.

The product of its digits is 96000, while the sum is 37.

The square root of 2521553842 is about 50215.0758438141. The cubic root of 2521553842 is about 1361.0980610699.

The spelling of 2521553842 in words is "two billion, five hundred twenty-one million, five hundred fifty-three thousand, eight hundred forty-two".