51125105 has 8 divisors (see below), whose sum is σ = 64579200. Its totient is φ = 38747376.

The previous prime is 51125077. The next prime is 51125117. The reversal of 51125105 is 50152115.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51125105 - 2¹² = 51121009 is a prime.

It is a super-2 number, since 2×51125105² = 5227552722522050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268985 + ... + 269174.

It is an arithmetic number, because the mean of its divisors is an integer number (8072400).

Almost surely, 2^51125105 is an apocalyptic number.

It is an amenable number.

51125105 is a deficient number, since it is larger than the sum of its proper divisors (13454095).

51125105 is a wasteful number, since it uses less digits than its factorization.

51125105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538183.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 51125105 is about 7150.1821655116. The cubic root of 51125105 is about 371.1459601067.

The spelling of 51125105 in words is "fifty-one million, one hundred twenty-five thousand, one hundred five".