554321665 has 4 divisors (see below), whose sum is σ = 665186004. Its totient is φ = 443457328.

The previous prime is 554321659. The next prime is 554321671. The reversal of 554321665 is 566123455.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (554321659) and next prime (554321671).

It can be written as a sum of positive squares in 2 ways, for example, as 265559616 + 288762049 = 16296^2 + 16993^2 .

It is a cyclic number.

It is not a de Polignac number, because 554321665 - 2¹¹ = 554319617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55432162 + ... + 55432171.

It is an arithmetic number, because the mean of its divisors is an integer number (166296501).

Almost surely, 2^554321665 is an apocalyptic number.

It is an amenable number.

554321665 is a deficient number, since it is larger than the sum of its proper divisors (110864339).

554321665 is a wasteful number, since it uses less digits than its factorization.

554321665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110864338.

The product of its digits is 108000, while the sum is 37.

The square root of 554321665 is about 23544.0367184559. The cubic root of 554321665 is about 821.4616331566.

The spelling of 554321665 in words is "five hundred fifty-four million, three hundred twenty-one thousand, six hundred sixty-five".