51255105 has 32 divisors (see below), whose sum is σ = 90288000. Its totient is φ = 24622080.

The previous prime is 51255053. The next prime is 51255133. The reversal of 51255105 is 50155215.

It is not a de Polignac number, because 51255105 - 2⁸ = 51254849 is a prime.

It is a super-2 number, since 2×51255105² = 5254171577122050, which contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 17271 + ... + 20019.

It is an arithmetic number, because the mean of its divisors is an integer number (2821500).

Almost surely, 2^51255105 is an apocalyptic number.

51255105 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51255105 is a deficient number, since it is larger than the sum of its proper divisors (39032895).

51255105 is a wasteful number, since it uses less digits than its factorization.

51255105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881.

The product of its (nonzero) digits is 1250, while the sum is 24.

The square root of 51255105 is about 7159.2670714257. The cubic root of 51255105 is about 371.4602749425.

It can be divided in two parts, 51255 and 105, that added together give a triangular number (51360 = T₃₂₀).

The spelling of 51255105 in words is "fifty-one million, two hundred fifty-five thousand, one hundred five".