2151514155 has 64 divisors (see below), whose sum is σ = 4044837888. Its totient is φ = 956067840.

The previous prime is 2151514151. The next prime is 2151514177. The reversal of 2151514155 is 5514151512.

It is not a de Polignac number, because 2151514155 - 2² = 2151514151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2151514151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1450044 + ... + 1451526.

It is an arithmetic number, because the mean of its divisors is an integer number (63200592).

Almost surely, 2^2151514155 is an apocalyptic number.

2151514155 is a deficient number, since it is larger than the sum of its proper divisors (1893323733).

2151514155 is a wasteful number, since it uses less digits than its factorization.

2151514155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876.

The product of its digits is 5000, while the sum is 30.

The square root of 2151514155 is about 46384.4171570583. The cubic root of 2151514155 is about 1290.9657961880.

Adding to 2151514155 its reverse (5514151512), we get a palindrome (7665665667).

The spelling of 2151514155 in words is "two billion, one hundred fifty-one million, five hundred fourteen thousand, one hundred fifty-five".