51429459 has 4 divisors (see below), whose sum is σ = 68572616. Its totient is φ = 34286304.

The previous prime is 51429439. The next prime is 51429491. The reversal of 51429459 is 95492415.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51429459 - 2⁷ = 51429331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51429439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8571574 + ... + 8571579.

It is an arithmetic number, because the mean of its divisors is an integer number (17143154).

Almost surely, 2^51429459 is an apocalyptic number.

51429459 is a deficient number, since it is larger than the sum of its proper divisors (17143157).

51429459 is a wasteful number, since it uses less digits than its factorization.

51429459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17143156.

The product of its digits is 64800, while the sum is 39.

The square root of 51429459 is about 7171.4335387006. The cubic root of 51429459 is about 371.8809958688.

The spelling of 51429459 in words is "fifty-one million, four hundred twenty-nine thousand, four hundred fifty-nine".