51133446 has 192 divisors, whose sum is σ = 150958080. Its totient is φ = 12130560.

The previous prime is 51133441. The next prime is 51133457. The reversal of 51133446 is 64433115.

It is a super-2 number, since 2×51133446² = 5229258599669832, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51133441) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 964756 + ... + 964808.

It is an arithmetic number, because the mean of its divisors is an integer number (786240).

Almost surely, 2^51133446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51133446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75479040).

51133446 is an abundant number, since it is smaller than the sum of its proper divisors (99824634).

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

51133446 is a wasteful number, since it uses less digits than its factorization.

51133446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 128 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 51133446 is about 7150.7654135764. The cubic root of 51133446 is about 371.1661430163.

The spelling of 51133446 in words is "fifty-one million, one hundred thirty-three thousand, four hundred forty-six".