51554223 has 18 divisors (see below), whose sum is σ = 86625864. Its totient is φ = 29459304.

The previous prime is 51554221. The next prime is 51554273. The reversal of 51554223 is 32245515.

It is a happy number.

It is not a de Polignac number, because 51554223 - 2¹ = 51554221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51554221) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 58011 + ... + 58892.

It is an arithmetic number, because the mean of its divisors is an integer number (4812548).

Almost surely, 2^51554223 is an apocalyptic number.

51554223 is a deficient number, since it is larger than the sum of its proper divisors (35071641).

51554223 is a wasteful number, since it uses less digits than its factorization.

51554223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116923 (or 116913 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 51554223 is about 7180.1269487384. The cubic root of 51554223 is about 372.1814714659.

Adding to 51554223 its reverse (32245515), we get a palindrome (83799738).

The spelling of 51554223 in words is "fifty-one million, five hundred fifty-four thousand, two hundred twenty-three".