51363405 has 24 divisors (see below), whose sum is σ = 89631360. Its totient is φ = 27208800.

The previous prime is 51363391. The next prime is 51363407. The reversal of 51363405 is 50436315.

It is not a de Polignac number, because 51363405 - 2¹² = 51359309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51363407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3016 + ... + 10574.

It is an arithmetic number, because the mean of its divisors is an integer number (3734640).

Almost surely, 2^51363405 is an apocalyptic number.

It is an amenable number.

51363405 is a deficient number, since it is larger than the sum of its proper divisors (38267955).

51363405 is a wasteful number, since it uses less digits than its factorization.

51363405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7721 (or 7718 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 51363405 is about 7166.8267036395. The cubic root of 51363405 is about 371.7217178225.

The spelling of 51363405 in words is "fifty-one million, three hundred sixty-three thousand, four hundred five".