51400606 has 4 divisors (see below), whose sum is σ = 77100912. Its totient is φ = 25700302.

The previous prime is 51400579. The next prime is 51400621. The reversal of 51400606 is 60600415.

51400606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60600415 = 5 ⋅12120083.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 12850150 + ... + 12850153.

It is an arithmetic number, because the mean of its divisors is an integer number (19275228).

Almost surely, 2^51400606 is an apocalyptic number.

51400606 is a deficient number, since it is larger than the sum of its proper divisors (25700306).

51400606 is a wasteful number, since it uses less digits than its factorization.

51400606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25700305.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 51400606 is about 7169.4215945221. The cubic root of 51400606 is about 371.8114385258.

The spelling of 51400606 in words is "fifty-one million, four hundred thousand, six hundred six".