51722496 has 144 divisors (see below), whose sum is σ = 174966400. Its totient is φ = 14764032.

The previous prime is 51722467. The next prime is 51722497. The reversal of 51722496 is 69422715.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a self number, because there is not a number n which added to its sum of digits gives 51722496.

It is not an unprimeable number, because it can be changed into a prime (51722497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47850 + ... + 48918.

Almost surely, 2^51722496 is an apocalyptic number.

51722496 is a gapful number since it is divisible by the number (56) 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 51722496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87483200).

51722496 is an abundant number, since it is smaller than the sum of its proper divisors (123243904).

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

51722496 is a wasteful number, since it uses less digits than its factorization.

51722496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101 (or 1081 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 51722496 is about 7191.8353707520. The cubic root of 51722496 is about 372.5859651752.

The spelling of 51722496 in words is "fifty-one million, seven hundred twenty-two thousand, four hundred ninety-six".