53551919 has 2 divisors, whose sum is σ = 53551920. Its totient is φ = 53551918.

The previous prime is 53551909. The next prime is 53551931. The reversal of 53551919 is 91915535.

53551919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53551919 is a prime.

It is a super-2 number, since 2×53551919² = 5735616057165122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53551909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26775959 + 26775960.

It is an arithmetic number, because the mean of its divisors is an integer number (26775960).

Almost surely, 2^53551919 is an apocalyptic number.

53551919 is a deficient number, since it is larger than the sum of its proper divisors (1).

53551919 is an equidigital number, since it uses as much as digits as its factorization.

53551919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30375, while the sum is 38.

The square root of 53551919 is about 7317.9176682988. The cubic root of 53551919 is about 376.9279530793.

The spelling of 53551919 in words is "fifty-three million, five hundred fifty-one thousand, nine hundred nineteen".