51478395 has 16 divisors (see below), whose sum is σ = 84119040. Its totient is φ = 26870624.

The previous prime is 51478381. The next prime is 51478409. The reversal of 51478395 is 59387415.

It is an interprime number because it is at equal distance from previous prime (51478381) and next prime (51478409).

It is a cyclic number.

It is not a de Polignac number, because 51478395 - 2¹⁹ = 50954107 is a prime.

It is an unprimeable number.

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, 35805 + ... + 37214.

It is an arithmetic number, because the mean of its divisors is an integer number (5257440).

Almost surely, 2^51478395 is an apocalyptic number.

51478395 is a deficient number, since it is larger than the sum of its proper divisors (32640645).

51478395 is a wasteful number, since it uses less digits than its factorization.

51478395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73074.

The product of its digits is 151200, while the sum is 42.

The square root of 51478395 is about 7174.8445976202. The cubic root of 51478395 is about 371.9989088302.

The spelling of 51478395 in words is "fifty-one million, four hundred seventy-eight thousand, three hundred ninety-five".