51469344 has 72 divisors (see below), whose sum is σ = 151809840. Its totient is φ = 17153856.

The previous prime is 51469321. The next prime is 51469349. The reversal of 51469344 is 44396415.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 51469299 and 51469308.

It is not an unprimeable number, because it can be changed into a prime (51469349) 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, 4467 + ... + 11085.

It is an arithmetic number, because the mean of its divisors is an integer number (2108470).

Almost surely, 2^51469344 is an apocalyptic number.

51469344 is a gapful number since it is divisible by the number (54) 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 51469344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75904920).

51469344 is an abundant number, since it is smaller than the sum of its proper divisors (100340496).

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

51469344 is an equidigital number, since it uses as much as digits as its factorization.

51469344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6644 (or 6624 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 51469344 is about 7174.2138245246. The cubic root of 51469344 is about 371.9771057711.

The spelling of 51469344 in words is "fifty-one million, four hundred sixty-nine thousand, three hundred forty-four".