155664601 has 8 divisors (see below), whose sum is σ = 159488384. Its totient is φ = 151850160.

The previous prime is 155664599. The next prime is 155664629. The reversal of 155664601 is 106466551.

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 155664601 - 2¹ = 155664599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155664001) 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, 41056 + ... + 44686.

It is an arithmetic number, because the mean of its divisors is an integer number (19936048).

Almost surely, 2^155664601 is an apocalyptic number.

It is an amenable number.

155664601 is a deficient number, since it is larger than the sum of its proper divisors (3823783).

155664601 is an equidigital number, since it uses as much as digits as its factorization.

155664601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 155664601 is about 12476.5620665310. The cubic root of 155664601 is about 537.9351886383.

The spelling of 155664601 in words is "one hundred fifty-five million, six hundred sixty-four thousand, six hundred one".