65481155 has 8 divisors (see below), whose sum is σ = 78916032. Its totient is φ = 52159168.

The previous prime is 65481139. The next prime is 65481173. The reversal of 65481155 is 55118456.

It is a happy number.

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 65481155 - 2⁴ = 65481139 is a prime.

It is a Duffinian number.

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, 26939 + ... + 29268.

It is an arithmetic number, because the mean of its divisors is an integer number (9864504).

Almost surely, 2^65481155 is an apocalyptic number.

65481155 is a deficient number, since it is larger than the sum of its proper divisors (13434877).

65481155 is a wasteful number, since it uses less digits than its factorization.

65481155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56445.

The product of its digits is 24000, while the sum is 35.

The square root of 65481155 is about 8092.0426963777. The cubic root of 65481155 is about 403.0622365280.

The spelling of 65481155 in words is "sixty-five million, four hundred eighty-one thousand, one hundred fifty-five".