51722744 has 32 divisors (see below), whose sum is σ = 100219680. Its totient is φ = 25006464.

The previous prime is 51722743. The next prime is 51722761. The reversal of 51722744 is 44722715.

It is a self number, because there is not a number n which added to its sum of digits gives 51722744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51722743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57869 + ... + 58755.

It is an arithmetic number, because the mean of its divisors is an integer number (3131865).

Almost surely, 2^51722744 is an apocalyptic number.

It is an amenable number.

51722744 is a deficient number, since it is larger than the sum of its proper divisors (48496936).

51722744 is a wasteful number, since it uses less digits than its factorization.

51722744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127 (or 1123 counting only the distinct ones).

The product of its digits is 15680, while the sum is 32.

The square root of 51722744 is about 7191.8526125053. The cubic root of 51722744 is about 372.5865606683.

The spelling of 51722744 in words is "fifty-one million, seven hundred twenty-two thousand, seven hundred forty-four".