153660561 has 8 divisors (see below), whose sum is σ = 205549344. Its totient is φ = 102106080.

The previous prime is 153660553. The next prime is 153660587. The reversal of 153660561 is 165066351.

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

It is not a de Polignac number, because 153660561 - 2³ = 153660553 is a prime.

It is a super-2 number, since 2×153660561² = 47223136013669442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (153664561) 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, 82500 + ... + 84341.

It is an arithmetic number, because the mean of its divisors is an integer number (25693668).

Almost surely, 2^153660561 is an apocalyptic number.

It is an amenable number.

153660561 is a deficient number, since it is larger than the sum of its proper divisors (51888783).

153660561 is a wasteful number, since it uses less digits than its factorization.

153660561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167151.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 153660561 is about 12395.9897144197. The cubic root of 153660561 is about 535.6167354162.

The spelling of 153660561 in words is "one hundred fifty-three million, six hundred sixty thousand, five hundred sixty-one".