51442453 has 2 divisors, whose sum is σ = 51442454. Its totient is φ = 51442452.

The previous prime is 51442451. The next prime is 51442499. The reversal of 51442453 is 35424415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40729924 + 10712529 = 6382^2 + 3273^2 .

It is a cyclic number.

It is not a de Polignac number, because 51442453 - 2¹ = 51442451 is a prime.

Together with 51442451, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51442451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25721226 + 25721227.

It is an arithmetic number, because the mean of its divisors is an integer number (25721227).

Almost surely, 2^51442453 is an apocalyptic number.

It is an amenable number.

51442453 is a deficient number, since it is larger than the sum of its proper divisors (1).

51442453 is an equidigital number, since it uses as much as digits as its factorization.

51442453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 28.

The square root of 51442453 is about 7172.3394370317. The cubic root of 51442453 is about 371.9123126461.

Adding to 51442453 its reverse (35424415), we get a palindrome (86866868).

The spelling of 51442453 in words is "fifty-one million, four hundred forty-two thousand, four hundred fifty-three".