51145105 has 16 divisors (see below), whose sum is σ = 67391424. Its totient is φ = 36953280.

The previous prime is 51145079. The next prime is 51145109. The reversal of 51145105 is 50154115.

It is a happy number.

It is not a de Polignac number, because 51145105 - 2¹³ = 51136913 is a prime.

It is a super-2 number, since 2×51145105² = 5231643530922050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51145109) 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 15 ways as a sum of consecutive naturals, for example, 5674 + ... + 11596.

It is an arithmetic number, because the mean of its divisors is an integer number (4211964).

Almost surely, 2^51145105 is an apocalyptic number.

51145105 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51145105 is a deficient number, since it is larger than the sum of its proper divisors (16246319).

51145105 is a wasteful number, since it uses less digits than its factorization.

51145105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6096.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 51145105 is about 7151.5805945259. The cubic root of 51145105 is about 371.1943508890.

It can be divided in two parts, 511 and 45105, that multiplied together give a triangular number (23048655 = T₆₇₈₉).

The spelling of 51145105 in words is "fifty-one million, one hundred forty-five thousand, one hundred five".