51457315 has 16 divisors (see below), whose sum is σ = 75999168. Its totient is φ = 32570496.

The previous prime is 51457313. The next prime is 51457319. The reversal of 51457315 is 51375415.

It is not a de Polignac number, because 51457315 - 2¹ = 51457313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51457313) 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, 56092 + ... + 57001.

It is an arithmetic number, because the mean of its divisors is an integer number (4749948).

Almost surely, 2^51457315 is an apocalyptic number.

51457315 is a deficient number, since it is larger than the sum of its proper divisors (24541853).

51457315 is a wasteful number, since it uses less digits than its factorization.

51457315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113118.

The product of its digits is 10500, while the sum is 31.

The square root of 51457315 is about 7173.3754258368. The cubic root of 51457315 is about 371.9481250168.

The spelling of 51457315 in words is "fifty-one million, four hundred fifty-seven thousand, three hundred fifteen".