152561161 has 4 divisors (see below), whose sum is σ = 153328000. Its totient is φ = 151794324.

The previous prime is 152561153. The next prime is 152561173. The reversal of 152561161 is 161165251.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 152561161 - 2³ = 152561153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152561191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383121 + ... + 383518.

It is an arithmetic number, because the mean of its divisors is an integer number (38332000).

Almost surely, 2^152561161 is an apocalyptic number.

It is an amenable number.

152561161 is a deficient number, since it is larger than the sum of its proper divisors (766839).

152561161 is an equidigital number, since it uses as much as digits as its factorization.

152561161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766838.

The product of its digits is 1800, while the sum is 28.

The square root of 152561161 is about 12351.5651234975. The cubic root of 152561161 is about 534.3362788582.

The spelling of 152561161 in words is "one hundred fifty-two million, five hundred sixty-one thousand, one hundred sixty-one".