53126551 has 2 divisors, whose sum is σ = 53126552. Its totient is φ = 53126550.

The previous prime is 53126539. The next prime is 53126599. The reversal of 53126551 is 15562135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53126551 - 2¹⁵ = 53093783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53126501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26563275 + 26563276.

It is an arithmetic number, because the mean of its divisors is an integer number (26563276).

Almost surely, 2^53126551 is an apocalyptic number.

53126551 is a deficient number, since it is larger than the sum of its proper divisors (1).

53126551 is an equidigital number, since it uses as much as digits as its factorization.

53126551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4500, while the sum is 28.

The square root of 53126551 is about 7288.7962655023. The cubic root of 53126551 is about 375.9273074161.

Adding to 53126551 its reverse (15562135), we get a palindrome (68688686).

The spelling of 53126551 in words is "fifty-three million, one hundred twenty-six thousand, five hundred fifty-one".