51007155 has 16 divisors (see below), whose sum is σ = 82210464. Its totient is φ = 27004160.

The previous prime is 51007139. The next prime is 51007171. The reversal of 51007155 is 55170015.

51007155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51007139) and next prime (51007171).

It is not a de Polignac number, because 51007155 - 2⁴ = 51007139 is a prime.

It is a super-2 number, since 2×51007155² = 5203459722388050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10356 + ... + 14465.

It is an arithmetic number, because the mean of its divisors is an integer number (5138154).

Almost surely, 2^51007155 is an apocalyptic number.

51007155 is a deficient number, since it is larger than the sum of its proper divisors (31203309).

51007155 is a wasteful number, since it uses less digits than its factorization.

51007155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24966.

The product of its (nonzero) digits is 875, while the sum is 24.

The square root of 51007155 is about 7141.9293611741. The cubic root of 51007155 is about 370.8603184784.

The spelling of 51007155 in words is "fifty-one million, seven thousand, one hundred fifty-five".