5154561161 has 4 divisors (see below), whose sum is σ = 5160794832. Its totient is φ = 5148327492.

The previous prime is 5154561157. The next prime is 5154561169. The reversal of 5154561161 is 1611654515.

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 5154561161 - 2² = 5154561157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5154561169) 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, 3115595 + ... + 3117248.

It is an arithmetic number, because the mean of its divisors is an integer number (1290198708).

Almost surely, 2^5154561161 is an apocalyptic number.

It is an amenable number.

5154561161 is a deficient number, since it is larger than the sum of its proper divisors (6233671).

5154561161 is an equidigital number, since it uses as much as digits as its factorization.

5154561161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6233670.

The product of its digits is 18000, while the sum is 35.

The square root of 5154561161 is about 71795.2725532817. The cubic root of 5154561161 is about 1727.4171712740.

The spelling of 5154561161 in words is "five billion, one hundred fifty-four million, five hundred sixty-one thousand, one hundred sixty-one".