51404252 has 6 divisors (see below), whose sum is σ = 89957448. Its totient is φ = 25702124.

The previous prime is 51404251. The next prime is 51404267. The reversal of 51404252 is 25240415.

It is a happy number.

51404252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51404251) 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 as a sum of consecutive naturals, namely, 6425528 + ... + 6425535.

It is an arithmetic number, because the mean of its divisors is an integer number (14992908).

Almost surely, 2^51404252 is an apocalyptic number.

It is an amenable number.

51404252 is a deficient number, since it is larger than the sum of its proper divisors (38553196).

51404252 is a wasteful number, since it uses less digits than its factorization.

51404252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12851067 (or 12851065 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 51404252 is about 7169.6758643610. The cubic root of 51404252 is about 371.8202295535.

Adding to 51404252 its reverse (25240415), we get a palindrome (76644667).

The spelling of 51404252 in words is "fifty-one million, four hundred four thousand, two hundred fifty-two".