51386477 has 8 divisors (see below), whose sum is σ = 52127712. Its totient is φ = 50650000.

The previous prime is 51386473. The next prime is 51386479. The reversal of 51386477 is 77468315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51386477 - 2² = 51386473 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51386471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24338 + ... + 26364.

It is an arithmetic number, because the mean of its divisors is an integer number (6515964).

Almost surely, 2^51386477 is an apocalyptic number.

It is an amenable number.

51386477 is a deficient number, since it is larger than the sum of its proper divisors (741235).

51386477 is a wasteful number, since it uses less digits than its factorization.

51386477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379.

The product of its digits is 141120, while the sum is 41.

The square root of 51386477 is about 7168.4361613953. The cubic root of 51386477 is about 371.7773675576. Note that the first 3 decimals are identical.

The spelling of 51386477 in words is "fifty-one million, three hundred eighty-six thousand, four hundred seventy-seven".