51888449 has 8 divisors (see below), whose sum is σ = 54728640. Its totient is φ = 49059216.

The previous prime is 51888427. The next prime is 51888479. The reversal of 51888449 is 94488815.

It is a happy number.

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

It is not a de Polignac number, because 51888449 - 2¹² = 51884353 is a prime.

It is a super-2 number, since 2×51888449² = 5384822279251202, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51888479) 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 7 ways as a sum of consecutive naturals, for example, 8132 + ... + 13034.

It is an arithmetic number, because the mean of its divisors is an integer number (6841080).

Almost surely, 2^51888449 is an apocalyptic number.

It is an amenable number.

51888449 is a deficient number, since it is larger than the sum of its proper divisors (2840191).

51888449 is a wasteful number, since it uses less digits than its factorization.

51888449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5479.

The product of its digits is 368640, while the sum is 47.

The square root of 51888449 is about 7203.3637281481. The cubic root of 51888449 is about 372.9840237343.

The spelling of 51888449 in words is "fifty-one million, eight hundred eighty-eight thousand, four hundred forty-nine".