66054155 has 8 divisors (see below), whose sum is σ = 80564784. Its totient is φ = 51976800.

The previous prime is 66054151. The next prime is 66054173. The reversal of 66054155 is 55145066.

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

It is not a de Polignac number, because 66054155 - 2² = 66054151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66054151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107981 + ... + 108590.

It is an arithmetic number, because the mean of its divisors is an integer number (10070598).

Almost surely, 2^66054155 is an apocalyptic number.

66054155 is a deficient number, since it is larger than the sum of its proper divisors (14510629).

66054155 is a wasteful number, since it uses less digits than its factorization.

66054155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216637.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 66054155 is about 8127.3707310544. The cubic root of 66054155 is about 404.2345038410.

The spelling of 66054155 in words is "sixty-six million, fifty-four thousand, one hundred fifty-five".