51414420 has 48 divisors (see below), whose sum is σ = 144365760. Its totient is φ = 13671936.

The previous prime is 51414403. The next prime is 51414427. The reversal of 51414420 is 2441415.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51414427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24991 + ... + 26969.

It is an arithmetic number, because the mean of its divisors is an integer number (3007620).

Almost surely, 2^51414420 is an apocalyptic number.

It is an amenable number.

51414420 is an abundant number, since it is smaller than the sum of its proper divisors (92951340).

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

51414420 is a wasteful number, since it uses less digits than its factorization.

51414420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424 (or 2422 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 51414420 is about 7170.3849269059. The cubic root of 51414420 is about 371.8447438605.

Adding to 51414420 its reverse (2441415), we get a palindrome (53855835).

The spelling of 51414420 in words is "fifty-one million, four hundred fourteen thousand, four hundred twenty".