555616401 has 16 divisors (see below), whose sum is σ = 751200000. Its totient is φ = 365234688.

The previous prime is 555616357. The next prime is 555616417. The reversal of 555616401 is 104616555.

It is not a de Polignac number, because 555616401 - 2⁶ = 555616337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (555616421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295075 + ... + 296951.

It is an arithmetic number, because the mean of its divisors is an integer number (46950000).

Almost surely, 2^555616401 is an apocalyptic number.

It is an amenable number.

555616401 is a deficient number, since it is larger than the sum of its proper divisors (195583599).

555616401 is a wasteful number, since it uses less digits than its factorization.

555616401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3208.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 555616401 is about 23571.5167310040. The cubic root of 555616401 is about 822.1007019019.

The spelling of 555616401 in words is "five hundred fifty-five million, six hundred sixteen thousand, four hundred one".