51323450 has 24 divisors (see below), whose sum is σ = 95910528. Its totient is φ = 20432880.

The previous prime is 51323449. The next prime is 51323471. The reversal of 51323450 is 5432315.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8849 + ... + 13451.

It is an arithmetic number, because the mean of its divisors is an integer number (3996272).

Almost surely, 2^51323450 is an apocalyptic number.

51323450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51323450 is a deficient number, since it is larger than the sum of its proper divisors (44587078).

51323450 is a wasteful number, since it uses less digits than its factorization.

51323450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4838 (or 4833 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 51323450 is about 7164.0386654456. The cubic root of 51323450 is about 371.6253068076.

Adding to 51323450 its reverse (5432315), we get a palindrome (56755765).

The spelling of 51323450 in words is "fifty-one million, three hundred twenty-three thousand, four hundred fifty".