53103551 has 2 divisors, whose sum is σ = 53103552. Its totient is φ = 53103550.

The previous prime is 53103511. The next prime is 53103623. The reversal of 53103551 is 15530135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53103551 - 2¹⁸ = 52841407 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53103511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26551775 + 26551776.

It is an arithmetic number, because the mean of its divisors is an integer number (26551776).

Almost surely, 2^53103551 is an apocalyptic number.

53103551 is a deficient number, since it is larger than the sum of its proper divisors (1).

53103551 is an equidigital number, since it uses as much as digits as its factorization.

53103551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1125, while the sum is 23.

The square root of 53103551 is about 7287.2183307487. The cubic root of 53103551 is about 375.8730496991.

Adding to 53103551 its reverse (15530135), we get a palindrome (68633686).

The spelling of 53103551 in words is "fifty-three million, one hundred three thousand, five hundred fifty-one".