51455323 has 4 divisors (see below), whose sum is σ = 51471288. Its totient is φ = 51439360.

The previous prime is 51455321. The next prime is 51455377. The reversal of 51455323 is 32355415.

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 51455323 - 2¹ = 51455321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51455291 and 51455300.

It is not an unprimeable number, because it can be changed into a prime (51455321) 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, 1261 + ... + 10222.

It is an arithmetic number, because the mean of its divisors is an integer number (12867822).

Almost surely, 2^51455323 is an apocalyptic number.

51455323 is a deficient number, since it is larger than the sum of its proper divisors (15965).

51455323 is a wasteful number, since it uses less digits than its factorization.

51455323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15964.

The product of its digits is 9000, while the sum is 28.

The square root of 51455323 is about 7173.2365777242. The cubic root of 51455323 is about 371.9433253738.

The spelling of 51455323 in words is "fifty-one million, four hundred fifty-five thousand, three hundred twenty-three".