64001155 has 8 divisors (see below), whose sum is σ = 76850784. Its totient is φ = 51168000.

The previous prime is 64001137. The next prime is 64001159. The reversal of 64001155 is 55110046.

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

It is a de Polignac number, because none of the positive numbers 2^k-64001155 is a prime.

It is a super-2 number, since 2×64001155² = 8192295682668050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64001159) 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, 7330 + ... + 13480.

It is an arithmetic number, because the mean of its divisors is an integer number (9606348).

Almost surely, 2^64001155 is an apocalyptic number.

64001155 is a deficient number, since it is larger than the sum of its proper divisors (12849629).

64001155 is a wasteful number, since it uses less digits than its factorization.

64001155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8237.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 64001155 is about 8000.0721871743. The cubic root of 64001155 is about 400.0024062355.

The spelling of 64001155 in words is "sixty-four million, one thousand, one hundred fifty-five".