51475 has 12 divisors (see below), whose sum is σ = 66960. Its totient is φ = 39200.

The previous prime is 51473. The next prime is 51479. The reversal of 51475 is 57415.

It is not a de Polignac number, because 51475 - 2¹ = 51473 is a prime.

51475 is a lucky number.

It is a nialpdrome in base 9.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 51475.

It is not an unprimeable number, because it can be changed into a prime (51473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 690 + ... + 760.

It is an arithmetic number, because the mean of its divisors is an integer number (5580).

2⁵¹⁴⁷⁵ is an apocalyptic number.

51475 is a deficient number, since it is larger than the sum of its proper divisors (15485).

51475 is a wasteful number, since it uses less digits than its factorization.

51475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 105 counting only the distinct ones).

The product of its digits is 700, while the sum is 22.

The square root of 51475 is about 226.8810260908. The cubic root of 51475 is about 37.1990730875.

The spelling of 51475 in words is "fifty-one thousand, four hundred seventy-five".