2051551255 has 16 divisors (see below), whose sum is σ = 2683185120. Its totient is φ = 1496734848.

The previous prime is 2051551241. The next prime is 2051551291. The reversal of 2051551255 is 5521551502.

It is a cyclic number.

It is not a de Polignac number, because 2051551255 - 2¹¹ = 2051549207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184740 + ... + 195529.

It is an arithmetic number, because the mean of its divisors is an integer number (167699070).

Almost surely, 2^2051551255 is an apocalyptic number.

2051551255 is a deficient number, since it is larger than the sum of its proper divisors (631633865).

2051551255 is a wasteful number, since it uses less digits than its factorization.

2051551255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380370.

The product of its (nonzero) digits is 12500, while the sum is 31.

The square root of 2051551255 is about 45294.0531968602. The cubic root of 2051551255 is about 1270.6544367174.

The spelling of 2051551255 in words is "two billion, fifty-one million, five hundred fifty-one thousand, two hundred fifty-five".