51333450 has 48 divisors (see below), whose sum is σ = 145496640. Its totient is φ = 11733120.

The previous prime is 51333431. The next prime is 51333461. The reversal of 51333450 is 5433315.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51333450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23395 + ... + 25494.

It is an arithmetic number, because the mean of its divisors is an integer number (3031180).

Almost surely, 2^51333450 is an apocalyptic number.

51333450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51333450 is an abundant number, since it is smaller than the sum of its proper divisors (94163190).

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

51333450 is a wasteful number, since it uses less digits than its factorization.

51333450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48911 (or 48906 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 51333450 is about 7164.7365618004. The cubic root of 51333450 is about 371.6494414006.

Adding to 51333450 its reverse (5433315), we get a palindrome (56766765).

The spelling of 51333450 in words is "fifty-one million, three hundred thirty-three thousand, four hundred fifty".