2553255550521 has 18 divisors (see below), whose sum is σ = 3993553555758. Its totient is φ = 1571234184000.

The previous prime is 2553255550513. The next prime is 2553255550579. The reversal of 2553255550521 is 1250555523552.

2553255550521 is a `hidden beast` number, since 2 + 5 + 5 + 3 + 25 + 55 + 50 + 521 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 121340058921 + 2431915491600 = 348339^2 + 1559460^2 .

It is not a de Polignac number, because 2553255550521 - 2³ = 2553255550513 is a prime.

It is a super-2 number, since 2×2553255550521² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2553255557521) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 839332980 + ... + 839336021.

It is an arithmetic number, because the mean of its divisors is an integer number (221864086431).

Almost surely, 2^{2553255550521} is an apocalyptic number.

It is an amenable number.

2553255550521 is a deficient number, since it is larger than the sum of its proper divisors (1440298005237).

2553255550521 is a wasteful number, since it uses less digits than its factorization.

2553255550521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678669033 (or 1678669017 counting only the distinct ones).

The product of its (nonzero) digits is 1875000, while the sum is 45.

The spelling of 2553255550521 in words is "two trillion, five hundred fifty-three billion, two hundred fifty-five million, five hundred fifty thousand, five hundred twenty-one".