51355223 has 16 divisors (see below), whose sum is σ = 54271296. Its totient is φ = 48545280.

The previous prime is 51355207. The next prime is 51355231. The reversal of 51355223 is 32255315.

It is a cyclic number.

It is not a de Polignac number, because 51355223 - 2⁴ = 51355207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51355192 and 51355201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51355253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296765 + ... + 296937.

It is an arithmetic number, because the mean of its divisors is an integer number (3391956).

Almost surely, 2^51355223 is an apocalyptic number.

51355223 is a deficient number, since it is larger than the sum of its proper divisors (2916073).

51355223 is a wasteful number, since it uses less digits than its factorization.

51355223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394.

The product of its digits is 4500, while the sum is 26.

The square root of 51355223 is about 7166.2558564427. The cubic root of 51355223 is about 371.7019788104.

The spelling of 51355223 in words is "fifty-one million, three hundred fifty-five thousand, two hundred twenty-three".