51606977 has 4 divisors (see below), whose sum is σ = 51628500. Its totient is φ = 51585456.

The previous prime is 51606967. The next prime is 51606991. The reversal of 51606977 is 77960615.

51606977 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.

It can be written as a sum of positive squares in 2 ways, for example, as 34000561 + 17606416 = 5831^2 + 4196^2 .

It is a cyclic number.

It is not a de Polignac number, because 51606977 - 2⁶ = 51606913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51606967) 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 3 ways as a sum of consecutive naturals, for example, 6638 + ... + 12135.

It is an arithmetic number, because the mean of its divisors is an integer number (12907125).

Almost surely, 2^51606977 is an apocalyptic number.

It is an amenable number.

51606977 is a deficient number, since it is larger than the sum of its proper divisors (21523).

51606977 is a wasteful number, since it uses less digits than its factorization.

51606977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21522.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 51606977 is about 7183.7996213703. The cubic root of 51606977 is about 372.3083758332.

The spelling of 51606977 in words is "fifty-one million, six hundred six thousand, nine hundred seventy-seven".