51450223 has 8 divisors (see below), whose sum is σ = 56186496. Its totient is φ = 46723800.

The previous prime is 51450209. The next prime is 51450253. The reversal of 51450223 is 32205415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51450223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51450194 and 51450203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51450253) 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, 12390 + ... + 16012.

It is an arithmetic number, because the mean of its divisors is an integer number (7023312).

Almost surely, 2^51450223 is an apocalyptic number.

51450223 is a deficient number, since it is larger than the sum of its proper divisors (4736273).

51450223 is a wasteful number, since it uses less digits than its factorization.

51450223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4925.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 51450223 is about 7172.8810808489. The cubic root of 51450223 is about 371.9310365666.

Adding to 51450223 its reverse (32205415), we get a palindrome (83655638).

The spelling of 51450223 in words is "fifty-one million, four hundred fifty thousand, two hundred twenty-three".