51677481 has 12 divisors (see below), whose sum is σ = 72031568. Its totient is φ = 32952744.

The previous prime is 51677459. The next prime is 51677519. The reversal of 51677481 is 18477615.

It is not a de Polignac number, because 51677481 - 2¹⁵ = 51644713 is a prime.

It is a super-2 number, since 2×51677481² = 5341124085010722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51677081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14695 + ... + 17868.

Almost surely, 2^51677481 is an apocalyptic number.

It is an amenable number.

51677481 is a deficient number, since it is larger than the sum of its proper divisors (20354087).

51677481 is a wasteful number, since it uses less digits than its factorization.

51677481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32612 (or 32589 counting only the distinct ones).

The product of its digits is 47040, while the sum is 39.

The square root of 51677481 is about 7188.7050989730. The cubic root of 51677481 is about 372.4778444249.

The spelling of 51677481 in words is "fifty-one million, six hundred seventy-seven thousand, four hundred eighty-one".