51342229 has 4 divisors (see below), whose sum is σ = 51657376. Its totient is φ = 51027084.

The previous prime is 51342217. The next prime is 51342253. The reversal of 51342229 is 92224315.

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 51342229 - 2¹¹ = 51340181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51342197 and 51342206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51342259) 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, 157329 + ... + 157654.

It is an arithmetic number, because the mean of its divisors is an integer number (12914344).

Almost surely, 2^51342229 is an apocalyptic number.

It is an amenable number.

51342229 is a deficient number, since it is larger than the sum of its proper divisors (315147).

51342229 is a wasteful number, since it uses less digits than its factorization.

51342229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315146.

The product of its digits is 4320, while the sum is 28.

The square root of 51342229 is about 7165.3491889789. The cubic root of 51342229 is about 371.6706265763.

The spelling of 51342229 in words is "fifty-one million, three hundred forty-two thousand, two hundred twenty-nine".