51616977 has 16 divisors (see below), whose sum is σ = 72864000. Its totient is φ = 32411664.

The previous prime is 51616973. The next prime is 51616979. The reversal of 51616977 is 77961615.

51616977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51616977 - 2² = 51616973 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51616973) 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 15 ways as a sum of consecutive naturals, for example, 7674 + ... + 12732.

It is an arithmetic number, because the mean of its divisors is an integer number (4554000).

Almost surely, 2^51616977 is an apocalyptic number.

51616977 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

51616977 is a deficient number, since it is larger than the sum of its proper divisors (21247023).

51616977 is a wasteful number, since it uses less digits than its factorization.

51616977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260.

The product of its digits is 79380, while the sum is 42.

The square root of 51616977 is about 7184.4955981614. The cubic root of 51616977 is about 372.3324219573.

The spelling of 51616977 in words is "fifty-one million, six hundred sixteen thousand, nine hundred seventy-seven".