2051326155 has 16 divisors (see below), whose sum is σ = 3286617120. Its totient is φ = 1092542208.

The previous prime is 2051326111. The next prime is 2051326157. The reversal of 2051326155 is 5516231502.

It is a happy number.

It is not a de Polignac number, because 2051326155 - 2¹² = 2051322059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2051326157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82290 + ... + 104279.

It is an arithmetic number, because the mean of its divisors is an integer number (205413570).

Almost surely, 2^2051326155 is an apocalyptic number.

2051326155 is a deficient number, since it is larger than the sum of its proper divisors (1235290965).

2051326155 is a wasteful number, since it uses less digits than its factorization.

2051326155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187310.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 2051326155 is about 45291.5682550295. The cubic root of 2051326155 is about 1270.6079621656.

Adding to 2051326155 its reverse (5516231502), we get a palindrome (7567557657).

The spelling of 2051326155 in words is "two billion, fifty-one million, three hundred twenty-six thousand, one hundred fifty-five".