51426446 has 4 divisors (see below), whose sum is σ = 77139672. Its totient is φ = 25713222.

The previous prime is 51426443. The next prime is 51426457. The reversal of 51426446 is 64462415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64462415 = 5 ⋅12892483.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51426443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12856610 + ... + 12856613.

It is an arithmetic number, because the mean of its divisors is an integer number (19284918).

Almost surely, 2^51426446 is an apocalyptic number.

51426446 is a deficient number, since it is larger than the sum of its proper divisors (25713226).

51426446 is a wasteful number, since it uses less digits than its factorization.

51426446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25713225.

The product of its digits is 23040, while the sum is 32.

The square root of 51426446 is about 7171.2234660482. The cubic root of 51426446 is about 371.8737334985.

The spelling of 51426446 in words is "fifty-one million, four hundred twenty-six thousand, four hundred forty-six".