51907842 has 24 divisors (see below), whose sum is σ = 128534016. Its totient is φ = 14830776.

The previous prime is 51907841. The next prime is 51907847. The reversal of 51907842 is 24870915.

It is a super-3 number, since 3×51907842³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 51907797 and 51907806.

It is not an unprimeable number, because it can be changed into a prime (51907841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205858 + ... + 206109.

It is an arithmetic number, because the mean of its divisors is an integer number (5355584).

Almost surely, 2^51907842 is an apocalyptic number.

51907842 is an abundant number, since it is smaller than the sum of its proper divisors (76626174).

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

51907842 is a wasteful number, since it uses less digits than its factorization.

51907842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411982 (or 411979 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 51907842 is about 7204.7097096274. The cubic root of 51907842 is about 373.0304848020.

The spelling of 51907842 in words is "fifty-one million, nine hundred seven thousand, eight hundred forty-two".