53555555 has 8 divisors (see below), whose sum is σ = 64429344. Its totient is φ = 42736000.

The previous prime is 53555549. The next prime is 53555561. The reversal of 53555555 is 55555535.

It is an interprime number because it is at equal distance from previous prime (53555549) and next prime (53555561).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53555555 - 2¹⁰ = 53554531 is a prime.

It is a Duffinian number.

53555555 is a modest number, since divided by 5555 gives 5355 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11351 + ... + 15360.

It is an arithmetic number, because the mean of its divisors is an integer number (8053668).

Almost surely, 2^53555555 is an apocalyptic number.

53555555 is a deficient number, since it is larger than the sum of its proper divisors (10873789).

53555555 is a wasteful number, since it uses less digits than its factorization.

53555555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27117.

The product of its digits is 234375, while the sum is 38.

The square root of 53555555 is about 7318.1660954094. The cubic root of 53555555 is about 376.9364836110.

The spelling of 53555555 in words is "fifty-three million, five hundred fifty-five thousand, five hundred fifty-five".