51677493 has 16 divisors (see below), whose sum is σ = 80876160. Its totient is φ = 28731456.

The previous prime is 51677459. The next prime is 51677519. The reversal of 51677493 is 39477615.

It is not a de Polignac number, because 51677493 - 2¹² = 51673397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51677453) 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 in 15 ways as a sum of consecutive naturals, for example, 32478 + ... + 34031.

It is an arithmetic number, because the mean of its divisors is an integer number (5054760).

Almost surely, 2^51677493 is an apocalyptic number.

It is an amenable number.

51677493 is a deficient number, since it is larger than the sum of its proper divisors (29198667).

51677493 is a wasteful number, since it uses less digits than its factorization.

51677493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66556.

The product of its digits is 158760, while the sum is 42.

The square root of 51677493 is about 7188.7059336156. The cubic root of 51677493 is about 372.4778732559.

The spelling of 51677493 in words is "fifty-one million, six hundred seventy-seven thousand, four hundred ninety-three".