51849448 has 48 divisors (see below), whose sum is σ = 117015300. Its totient is φ = 21450240.

The previous prime is 51849437. The next prime is 51849449. The reversal of 51849448 is 84494815.

It can be written as a sum of positive squares in 2 ways, for example, as 51581124 + 268324 = 7182^2 + 518^2 .

It is not an unprimeable number, because it can be changed into a prime (51849449) 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, 9088 + ... + 13648.

Almost surely, 2^51849448 is an apocalyptic number.

51849448 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51849448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58507650).

51849448 is an abundant number, since it is smaller than the sum of its proper divisors (65165852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51849448 is a wasteful number, since it uses less digits than its factorization.

51849448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4610 (or 4599 counting only the distinct ones).

The product of its digits is 184320, while the sum is 43.

The square root of 51849448 is about 7200.6560812193. The cubic root of 51849448 is about 372.8905514470.

The spelling of 51849448 in words is "fifty-one million, eight hundred forty-nine thousand, four hundred forty-eight".