555551361 has 12 divisors (see below), whose sum is σ = 837353088. Its totient is φ = 354264504.

The previous prime is 555551351. The next prime is 555551369. The reversal of 555551361 is 163155555.

It is not a de Polignac number, because 555551361 - 2¹⁷ = 555420289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (555551369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1341705 + ... + 1342118.

It is an arithmetic number, because the mean of its divisors is an integer number (69779424).

Almost surely, 2^555551361 is an apocalyptic number.

It is an amenable number.

555551361 is a deficient number, since it is larger than the sum of its proper divisors (281801727).

555551361 is a wasteful number, since it uses less digits than its factorization.

555551361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683852 (or 2683849 counting only the distinct ones).

The product of its digits is 56250, while the sum is 36.

The square root of 555551361 is about 23570.1370594233. The cubic root of 555551361 is about 822.0686225056.

The spelling of 555551361 in words is "five hundred fifty-five million, five hundred fifty-one thousand, three hundred sixty-one".