51451412 has 12 divisors (see below), whose sum is σ = 90614580. Its totient is φ = 25561536.

The previous prime is 51451409. The next prime is 51451427. The reversal of 51451412 is 21415415.

It can be written as a sum of positive squares in 2 ways, for example, as 13060996 + 38390416 = 3614^2 + 6196^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40337 + ... + 41592.

It is an arithmetic number, because the mean of its divisors is an integer number (7551215).

Almost surely, 2^51451412 is an apocalyptic number.

It is an amenable number.

51451412 is a deficient number, since it is larger than the sum of its proper divisors (39163168).

51451412 is a wasteful number, since it uses less digits than its factorization.

51451412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82090 (or 82088 counting only the distinct ones).

The product of its digits is 800, while the sum is 23.

The square root of 51451412 is about 7172.9639619895. The cubic root of 51451412 is about 371.9339016179.

Adding to 51451412 its reverse (21415415), we get a palindrome (72866827).

The spelling of 51451412 in words is "fifty-one million, four hundred fifty-one thousand, four hundred twelve".