65553155 has 8 divisors (see below), whose sum is σ = 78916992. Its totient is φ = 52273728.

The previous prime is 65553149. The next prime is 65553157. The reversal of 65553155 is 55135556.

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

It is a cyclic number.

It is not a de Polignac number, because 65553155 - 2⁶ = 65553091 is a prime.

It is a super-2 number, since 2×65553155² = 8594432260908050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65553157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19379 + ... + 22508.

It is an arithmetic number, because the mean of its divisors is an integer number (9864624).

Almost surely, 2^65553155 is an apocalyptic number.

65553155 is a deficient number, since it is larger than the sum of its proper divisors (13363837).

65553155 is a wasteful number, since it uses less digits than its factorization.

65553155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42205.

The product of its digits is 56250, while the sum is 35.

The square root of 65553155 is about 8096.4902890079. The cubic root of 65553155 is about 403.2099118452.

The spelling of 65553155 in words is "sixty-five million, five hundred fifty-three thousand, one hundred fifty-five".