159654917 has 4 divisors (see below), whose sum is σ = 159680640. Its totient is φ = 159629196.

The previous prime is 159654893. The next prime is 159654941. The reversal of 159654917 is 719456951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (159654893) and next prime (159654941).

It is a cyclic number.

It is not a de Polignac number, because 159654917 - 2¹⁸ = 159392773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159654617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2834 + ... + 18092.

It is an arithmetic number, because the mean of its divisors is an integer number (39920160).

Almost surely, 2^159654917 is an apocalyptic number.

It is an amenable number.

159654917 is a deficient number, since it is larger than the sum of its proper divisors (25723).

159654917 is a wasteful number, since it uses less digits than its factorization.

159654917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25722.

The product of its digits is 340200, while the sum is 47.

The square root of 159654917 is about 12635.4626745521. The cubic root of 159654917 is about 542.4929509869.

The spelling of 159654917 in words is "one hundred fifty-nine million, six hundred fifty-four thousand, nine hundred seventeen".