51342253 has 2 divisors, whose sum is σ = 51342254. Its totient is φ = 51342252.

The previous prime is 51342217. The next prime is 51342259. The reversal of 51342253 is 35224315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50722884 + 619369 = 7122^2 + 787^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51342253 is a prime.

It is equal to p_3076720 and since 51342253 and 3076720 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51342259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25671126 + 25671127.

It is an arithmetic number, because the mean of its divisors is an integer number (25671127).

Almost surely, 2^51342253 is an apocalyptic number.

It is an amenable number.

51342253 is a deficient number, since it is larger than the sum of its proper divisors (1).

51342253 is an equidigital number, since it uses as much as digits as its factorization.

51342253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 25.

The square root of 51342253 is about 7165.3508637051. The cubic root of 51342253 is about 371.6706844890.

Adding to 51342253 its reverse (35224315), we get a palindrome (86566568).

The spelling of 51342253 in words is "fifty-one million, three hundred forty-two thousand, two hundred fifty-three".