51469 has 4 divisors (see below), whose sum is σ = 56160. Its totient is φ = 46780.

The previous prime is 51461. The next prime is 51473. The reversal of 51469 is 96415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51469 - 2³ = 51461 is a prime.

It is a super-2 number, since 2×51469² = 5298115922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51461) 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 3 ways as a sum of consecutive naturals, for example, 2329 + ... + 2350.

It is an arithmetic number, because the mean of its divisors is an integer number (14040).

2⁵¹⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

51469 is a deficient number, since it is larger than the sum of its proper divisors (4691).

51469 is a wasteful number, since it uses less digits than its factorization.

51469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4690.

The product of its digits is 1080, while the sum is 25.

The square root of 51469 is about 226.8678029161. The cubic root of 51469 is about 37.1976277055.

The spelling of 51469 in words is "fifty-one thousand, four hundred sixty-nine".