51084447 has 4 divisors (see below), whose sum is σ = 68112600. Its totient is φ = 34056296.

The previous prime is 51084431. The next prime is 51084461. The reversal of 51084447 is 74448015.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51084447 - 2⁴ = 51084431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51084427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8514072 + ... + 8514077.

It is an arithmetic number, because the mean of its divisors is an integer number (17028150).

Almost surely, 2^51084447 is an apocalyptic number.

51084447 is a deficient number, since it is larger than the sum of its proper divisors (17028153).

51084447 is a wasteful number, since it uses less digits than its factorization.

51084447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17028152.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 51084447 is about 7147.3384556771. The cubic root of 51084447 is about 371.0475475661.

The spelling of 51084447 in words is "fifty-one million, eighty-four thousand, four hundred forty-seven".