51204342 has 32 divisors (see below), whose sum is σ = 117280512. Its totient is φ = 14599584.

The previous prime is 51204319. The next prime is 51204347. The reversal of 51204342 is 24340215.

51204342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×51204342³ (a number of 24 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51204347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26493 + ... + 28359.

It is an arithmetic number, because the mean of its divisors is an integer number (3665016).

Almost surely, 2^51204342 is an apocalyptic number.

51204342 is an abundant number, since it is smaller than the sum of its proper divisors (66076170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51204342 is a wasteful number, since it uses less digits than its factorization.

51204342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2532.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 51204342 is about 7155.7209280407. The cubic root of 51204342 is about 371.3376031521.

Adding to 51204342 its reverse (24340215), we get a palindrome (75544557).

The spelling of 51204342 in words is "fifty-one million, two hundred four thousand, three hundred forty-two".