2505553021 has 8 divisors (see below), whose sum is σ = 2587904000. Its totient is φ = 2423297520.

The previous prime is 2505553003. The next prime is 2505553027. The reversal of 2505553021 is 1203555052.

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

It is a cyclic number.

It is not a de Polignac number, because 2505553021 - 2⁵ = 2505552989 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 (2505553027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31555 + ... + 77503.

It is an arithmetic number, because the mean of its divisors is an integer number (323488000).

Almost surely, 2^2505553021 is an apocalyptic number.

It is an amenable number.

2505553021 is a deficient number, since it is larger than the sum of its proper divisors (82350979).

2505553021 is a wasteful number, since it uses less digits than its factorization.

2505553021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47739.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 2505553021 is about 50055.4994081569. The cubic root of 2505553021 is about 1358.2129463992.

The spelling of 2505553021 in words is "two billion, five hundred five million, five hundred fifty-three thousand, twenty-one".