51743472 has 120 divisors (see below), whose sum is σ = 150407040. Its totient is φ = 15312000.

The previous prime is 51743459. The next prime is 51743473. The reversal of 51743472 is 27434715.

It is a super-2 number, since 2×51743472² = 5354773789229568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51743473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 342597 + ... + 342747.

It is an arithmetic number, because the mean of its divisors is an integer number (1253392).

Almost surely, 2^51743472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51743472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75203520).

51743472 is an abundant number, since it is smaller than the sum of its proper divisors (98663568).

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

51743472 is a wasteful number, since it uses less digits than its factorization.

51743472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 226 counting only the distinct ones).

The product of its digits is 23520, while the sum is 33.

The square root of 51743472 is about 7193.2935432943. The cubic root of 51743472 is about 372.6363256408.

It can be divided in two parts, 5174 and 3472, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 51743472 in words is "fifty-one million, seven hundred forty-three thousand, four hundred seventy-two".