51429499 has 8 divisors (see below), whose sum is σ = 58039920. Its totient is φ = 45141600.

The previous prime is 51429491. The next prime is 51429509. The reversal of 51429499 is 99492415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51429499 - 2³ = 51429491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51429491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80292 + ... + 80929.

It is an arithmetic number, because the mean of its divisors is an integer number (7254990).

Almost surely, 2^51429499 is an apocalyptic number.

51429499 is a deficient number, since it is larger than the sum of its proper divisors (6610421).

51429499 is a wasteful number, since it uses less digits than its factorization.

51429499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161261.

The product of its digits is 116640, while the sum is 43.

The square root of 51429499 is about 7171.4363275428. The cubic root of 51429499 is about 371.8810922807.

It can be divided in two parts, 5142 and 9499, that added together give a palindrome (14641).

The spelling of 51429499 in words is "fifty-one million, four hundred twenty-nine thousand, four hundred ninety-nine".