51213414 has 32 divisors (see below), whose sum is σ = 117319680. Its totient is φ = 14599872.

The previous prime is 51213413. The next prime is 51213419. The reversal of 51213414 is 41431215.

51213414 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51213413) 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, 22827 + ... + 24969.

It is an arithmetic number, because the mean of its divisors is an integer number (3666240).

Almost surely, 2^51213414 is an apocalyptic number.

51213414 is an abundant number, since it is smaller than the sum of its proper divisors (66106266).

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

51213414 is a wasteful number, since it uses less digits than its factorization.

51213414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2724.

The product of its digits is 480, while the sum is 21.

The square root of 51213414 is about 7156.3547983593. The cubic root of 51213414 is about 371.3595321244.

Adding to 51213414 its reverse (41431215), we get a palindrome (92644629).

The spelling of 51213414 in words is "fifty-one million, two hundred thirteen thousand, four hundred fourteen".