51126013 has 2 divisors, whose sum is σ = 51126014. Its totient is φ = 51126012.

The previous prime is 51125993. The next prime is 51126029. The reversal of 51126013 is 31062115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45941284 + 5184729 = 6778^2 + 2277^2 .

It is a cyclic number.

It is not a de Polignac number, because 51126013 - 2¹³ = 51117821 is a prime.

It is a super-2 number, since 2×51126013² = 5227738410552338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51136013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25563006 + 25563007.

It is an arithmetic number, because the mean of its divisors is an integer number (25563007).

Almost surely, 2^51126013 is an apocalyptic number.

It is an amenable number.

51126013 is a deficient number, since it is larger than the sum of its proper divisors (1).

51126013 is an equidigital number, since it uses as much as digits as its factorization.

51126013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 51126013 is about 7150.2456601155. The cubic root of 51126013 is about 371.1481573217.

Adding to 51126013 its reverse (31062115), we get a palindrome (82188128).

The spelling of 51126013 in words is "fifty-one million, one hundred twenty-six thousand, thirteen".