51064915 has 8 divisors (see below), whose sum is σ = 66848688. Its totient is φ = 37138080.

The previous prime is 51064903. The next prime is 51064927. The reversal of 51064915 is 51946015.

It is an interprime number because it is at equal distance from previous prime (51064903) and next prime (51064927).

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

It is not a de Polignac number, because 51064915 - 2¹³ = 51056723 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 464172 + ... + 464281.

It is an arithmetic number, because the mean of its divisors is an integer number (8356086).

Almost surely, 2^51064915 is an apocalyptic number.

51064915 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51064915 is a deficient number, since it is larger than the sum of its proper divisors (15783773).

51064915 is a wasteful number, since it uses less digits than its factorization.

51064915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928469.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 51064915 is about 7145.9719422903. The cubic root of 51064915 is about 371.0002518628. Note that the first 3 decimals are identical.

The spelling of 51064915 in words is "fifty-one million, sixty-four thousand, nine hundred fifteen".