554402161 has 4 divisors (see below), whose sum is σ = 556077424. Its totient is φ = 552726900.

The previous prime is 554402141. The next prime is 554402179. The reversal of 554402161 is 161204455.

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 554402161 - 2²⁵ = 520847729 is a prime.

It is a super-2 number, since 2×554402161² = 614723512242939842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (554402131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 837135 + ... + 837796.

It is an arithmetic number, because the mean of its divisors is an integer number (139019356).

Almost surely, 2^554402161 is an apocalyptic number.

It is an amenable number.

554402161 is a deficient number, since it is larger than the sum of its proper divisors (1675263).

554402161 is a wasteful number, since it uses less digits than its factorization.

554402161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675262.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 554402161 is about 23545.7461338561. The cubic root of 554402161 is about 821.5013941710.

The spelling of 554402161 in words is "five hundred fifty-four million, four hundred two thousand, one hundred sixty-one".