51429 has 16 divisors (see below), whose sum is σ = 81920. Its totient is φ = 28080.

The previous prime is 51427. The next prime is 51431. The reversal of 51429 is 92415.

51429 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51427) and next prime (51431).

It is not a de Polignac number, because 51429 - 2¹ = 51427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

51429 is a Rhonda number in base 8.

Its product of digits (360) is a multiple of the sum of its prime divisors (120).

It is a Curzon number.

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 51429.

It is not an unprimeable number, because it can be changed into a prime (51421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 612 + ... + 690.

It is an arithmetic number, because the mean of its divisors is an integer number (5120).

2⁵¹⁴²⁹ is an apocalyptic number.

It is an amenable number.

51429 is a deficient number, since it is larger than the sum of its proper divisors (30491).

51429 is a wasteful number, since it uses less digits than its factorization.

51429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120.

The product of its digits is 360, while the sum is 21.

The square root of 51429 is about 226.7796287148. The cubic root of 51429 is about 37.1879889539.

It can be divided in two parts, 5142 and 9, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 51429 in words is "fifty-one thousand, four hundred twenty-nine".