51005151 has 12 divisors (see below), whose sum is σ = 78008112. Its totient is φ = 32003136.

The previous prime is 51005057. The next prime is 51005167. The reversal of 51005151 is 15150015.

51005151 is a `hidden beast` number, since 510 + 0 + 5 + 151 = 666.

It is not a de Polignac number, because 51005151 - 2¹⁴ = 50988767 is a prime.

51005151 is a modest number, since divided by 5151 gives 5100 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51005551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166531 + ... + 166836.

It is an arithmetic number, because the mean of its divisors is an integer number (6500676).

Almost surely, 2^51005151 is an apocalyptic number.

51005151 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

51005151 is a deficient number, since it is larger than the sum of its proper divisors (27002961).

51005151 is a wasteful number, since it uses less digits than its factorization.

51005151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333390 (or 333387 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 51005151 is about 7141.7890615727. The cubic root of 51005151 is about 370.8554615532.

Adding to 51005151 its reverse (15150015), we get a palindrome (66155166).

The spelling of 51005151 in words is "fifty-one million, five thousand, one hundred fifty-one".