154400161 has 4 divisors (see below), whose sum is σ = 154425024. Its totient is φ = 154375300.

The previous prime is 154400117. The next prime is 154400167. The reversal of 154400161 is 161004451.

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, and also an emirpimes, since its reverse is a distinct semiprime: 161004451 = 59 ⋅2728889.

It is a cyclic number.

It is not a de Polignac number, because 154400161 - 2⁷ = 154400033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154400167) 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, 5676 + ... + 18466.

It is an arithmetic number, because the mean of its divisors is an integer number (38606256).

Almost surely, 2^154400161 is an apocalyptic number.

It is an amenable number.

154400161 is a deficient number, since it is larger than the sum of its proper divisors (24863).

154400161 is a wasteful number, since it uses less digits than its factorization.

154400161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24862.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 154400161 is about 12425.7861320723. The cubic root of 154400161 is about 536.4747049948.

The spelling of 154400161 in words is "one hundred fifty-four million, four hundred thousand, one hundred sixty-one".