51012430 has 24 divisors (see below), whose sum is σ = 106814808. Its totient is φ = 17489808.

The previous prime is 51012419. The next prime is 51012439. The reversal of 51012430 is 3421015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51012439) 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, 51564 + ... + 52543.

It is an arithmetic number, because the mean of its divisors is an integer number (4450617).

Almost surely, 2^51012430 is an apocalyptic number.

51012430 is an abundant number, since it is smaller than the sum of its proper divisors (55802378).

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

51012430 is a wasteful number, since it uses less digits than its factorization.

51012430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104128 (or 104121 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 51012430 is about 7142.2986495945. The cubic root of 51012430 is about 370.8731024414.

Adding to 51012430 its reverse (3421015), we get a palindrome (54433445).

The spelling of 51012430 in words is "fifty-one million, twelve thousand, four hundred thirty".