51423453 has 12 divisors (see below), whose sum is σ = 78647868. Its totient is φ = 32265600.

The previous prime is 51423439. The next prime is 51423457. The reversal of 51423453 is 35432415.

It can be written as a sum of positive squares in 2 ways, for example, as 44595684 + 6827769 = 6678^2 + 2613^2 .

It is a de Polignac number, because none of the positive numbers 2^k-51423453 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51423457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167898 + ... + 168203.

It is an arithmetic number, because the mean of its divisors is an integer number (6553989).

Almost surely, 2^51423453 is an apocalyptic number.

It is an amenable number.

51423453 is a deficient number, since it is larger than the sum of its proper divisors (27224415).

51423453 is a wasteful number, since it uses less digits than its factorization.

51423453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336124 (or 336121 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 51423453 is about 7171.0147817446. The cubic root of 51423453 is about 371.8665190543.

Adding to 51423453 its reverse (35432415), we get a palindrome (86855868).

The spelling of 51423453 in words is "fifty-one million, four hundred twenty-three thousand, four hundred fifty-three".