51250115 has 8 divisors (see below), whose sum is σ = 70285920. Its totient is φ = 35142912.

The previous prime is 51250097. The next prime is 51250117. The reversal of 51250115 is 51105215.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-51250115 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (51250117) 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 7 ways as a sum of consecutive naturals, for example, 732110 + ... + 732179.

It is an arithmetic number, because the mean of its divisors is an integer number (8785740).

Almost surely, 2^51250115 is an apocalyptic number.

51250115 is a deficient number, since it is larger than the sum of its proper divisors (19035805).

51250115 is a wasteful number, since it uses less digits than its factorization.

51250115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464301.

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

The square root of 51250115 is about 7158.9185635821. The cubic root of 51250115 is about 371.4482199031.

The spelling of 51250115 in words is "fifty-one million, two hundred fifty thousand, one hundred fifteen".