51380105 has 16 divisors (see below), whose sum is σ = 70581504. Its totient is φ = 35173440.

The previous prime is 51380081. The next prime is 51380107. The reversal of 51380105 is 50108315.

It is not a de Polignac number, because 51380105 - 2⁸ = 51379849 is a prime.

It is a super-2 number, since 2×51380105² = 5279830379622050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51380107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36515 + ... + 37895.

It is an arithmetic number, because the mean of its divisors is an integer number (4411344).

Almost surely, 2^51380105 is an apocalyptic number.

It is an amenable number.

51380105 is a deficient number, since it is larger than the sum of its proper divisors (19201399).

51380105 is a wasteful number, since it uses less digits than its factorization.

51380105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 51380105 is about 7167.9916992139. The cubic root of 51380105 is about 371.7619999392.

The spelling of 51380105 in words is "fifty-one million, three hundred eighty thousand, one hundred five".