51334429 has 4 divisors (see below), whose sum is σ = 52721884. Its totient is φ = 49946976.

The previous prime is 51334417. The next prime is 51334433. The reversal of 51334429 is 92443315.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37234404 + 14100025 = 6102^2 + 3755^2 .

It is a cyclic number.

It is not a de Polignac number, because 51334429 - 2⁷ = 51334301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51334429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51334469) 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, 693672 + ... + 693745.

It is an arithmetic number, because the mean of its divisors is an integer number (13180471).

Almost surely, 2^51334429 is an apocalyptic number.

It is an amenable number.

51334429 is a deficient number, since it is larger than the sum of its proper divisors (1387455).

51334429 is a wasteful number, since it uses less digits than its factorization.

51334429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387454.

The product of its digits is 12960, while the sum is 31.

The square root of 51334429 is about 7164.8048822002. The cubic root of 51334429 is about 371.6518040088.

The spelling of 51334429 in words is "fifty-one million, three hundred thirty-four thousand, four hundred twenty-nine".