148643561 has 8 divisors (see below), whose sum is σ = 165928224. Its totient is φ = 131987520.

The previous prime is 148643557. The next prime is 148643581. The reversal of 148643561 is 165346841.

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 148643561 - 2² = 148643557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (148643581) 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, 156656 + ... + 157601.

It is an arithmetic number, because the mean of its divisors is an integer number (20741028).

Almost surely, 2^148643561 is an apocalyptic number.

148643561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

148643561 is a deficient number, since it is larger than the sum of its proper divisors (17284663).

148643561 is a wasteful number, since it uses less digits than its factorization.

148643561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314311.

The product of its digits is 69120, while the sum is 38.

The square root of 148643561 is about 12191.9465632031. The cubic root of 148643561 is about 529.7228419163.

The spelling of 148643561 in words is "one hundred forty-eight million, six hundred forty-three thousand, five hundred sixty-one".