51123253 has 2 divisors, whose sum is σ = 51123254. Its totient is φ = 51123252.

The previous prime is 51123221. The next prime is 51123277. The reversal of 51123253 is 35232115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40870449 + 10252804 = 6393^2 + 3202^2 .

It is a cyclic number.

It is not a de Polignac number, because 51123253 - 2⁵ = 51123221 is a prime.

It is a super-2 number, since 2×51123253² = 5227173994604018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51120253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25561626 + 25561627.

It is an arithmetic number, because the mean of its divisors is an integer number (25561627).

Almost surely, 2^51123253 is an apocalyptic number.

It is an amenable number.

51123253 is a deficient number, since it is larger than the sum of its proper divisors (1).

51123253 is an equidigital number, since it uses as much as digits as its factorization.

51123253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 900, while the sum is 22.

The square root of 51123253 is about 7150.0526571488. The cubic root of 51123253 is about 371.1414784819.

Adding to 51123253 its reverse (35232115), we get a palindrome (86355368).

The spelling of 51123253 in words is "fifty-one million, one hundred twenty-three thousand, two hundred fifty-three".