153561641 has 8 divisors (see below), whose sum is σ = 159563520. Its totient is φ = 147606928.

The previous prime is 153561637. The next prime is 153561649. The reversal of 153561641 is 146165351.

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 153561641 - 2² = 153561637 is a prime.

It is a super-2 number, since 2×153561641² = 47162355173225762, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 153561598 and 153561607.

It is not an unprimeable number, because it can be changed into a prime (153561649) 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, 5081 + ... + 18246.

It is an arithmetic number, because the mean of its divisors is an integer number (19945440).

Almost surely, 2^153561641 is an apocalyptic number.

It is an amenable number.

153561641 is a deficient number, since it is larger than the sum of its proper divisors (6001879).

153561641 is a wasteful number, since it uses less digits than its factorization.

153561641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23583.

The product of its digits is 10800, while the sum is 32.

The square root of 153561641 is about 12391.9990719819. Note that the first 3 decimals coincide. The cubic root of 153561641 is about 535.5017751414.

The spelling of 153561641 in words is "one hundred fifty-three million, five hundred sixty-one thousand, six hundred forty-one".