2051504155 has 16 divisors (see below), whose sum is σ = 2645529120. Its totient is φ = 1521603072.

The previous prime is 2051504149. The next prime is 2051504177. The reversal of 2051504155 is 5514051502.

It is a cyclic number.

It is not a de Polignac number, because 2051504155 - 2⁷ = 2051504027 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174420 + ... + 185809.

It is an arithmetic number, because the mean of its divisors is an integer number (165345570).

Almost surely, 2^2051504155 is an apocalyptic number.

2051504155 is a deficient number, since it is larger than the sum of its proper divisors (594024965).

2051504155 is a wasteful number, since it uses less digits than its factorization.

2051504155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360318.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 2051504155 is about 45293.5332580712. The cubic root of 2051504155 is about 1270.6447126478.

Adding to 2051504155 its reverse (5514051502), we get a palindrome (7565555657).

The spelling of 2051504155 in words is "two billion, fifty-one million, five hundred four thousand, one hundred fifty-five".