2551511151 has 16 divisors (see below), whose sum is σ = 4320019200. Its totient is φ = 1458006264.

The previous prime is 2551511143. The next prime is 2551511161. The reversal of 2551511151 is 1511151552.

It is a happy number.

2551511151 is a `hidden beast` number, since 2 + 551 + 51 + 11 + 51 = 666.

2551511151 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2551511151 - 2³ = 2551511143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551511161) 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, 6749841 + ... + 6750218.

It is an arithmetic number, because the mean of its divisors is an integer number (270001200).

Almost surely, 2^2551511151 is an apocalyptic number.

2551511151 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2551511151 is a deficient number, since it is larger than the sum of its proper divisors (1768508049).

2551511151 is a wasteful number, since it uses less digits than its factorization.

2551511151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13500075 (or 13500069 counting only the distinct ones).

The product of its digits is 1250, while the sum is 27.

The square root of 2551511151 is about 50512.4851002205. The cubic root of 2551511151 is about 1366.4670279939.

The spelling of 2551511151 in words is "two billion, five hundred fifty-one million, five hundred eleven thousand, one hundred fifty-one".