51364223 has 4 divisors (see below), whose sum is σ = 51427608. Its totient is φ = 51300840.

The previous prime is 51364211. The next prime is 51364237. The reversal of 51364223 is 32246315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51364223 - 2⁸ = 51363967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51364192 and 51364201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51364273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30461 + ... + 32102.

It is an arithmetic number, because the mean of its divisors is an integer number (12856902).

Almost surely, 2^51364223 is an apocalyptic number.

51364223 is a deficient number, since it is larger than the sum of its proper divisors (63385).

51364223 is an equidigital number, since it uses as much as digits as its factorization.

51364223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63384.

The product of its digits is 4320, while the sum is 26.

The square root of 51364223 is about 7166.8837719053. The cubic root of 51364223 is about 371.7236911259.

The spelling of 51364223 in words is "fifty-one million, three hundred sixty-four thousand, two hundred twenty-three".