555155664 has 80 divisors (see below), whose sum is σ = 1641597312. Its totient is φ = 158367744.

The previous prime is 555155663. The next prime is 555155677. The reversal of 555155664 is 466551555.

It is a super-2 number, since 2×555155664² = 616395622542561792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555155663) 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, 386692 + ... + 388124.

Almost surely, 2^555155664 is an apocalyptic number.

It is an amenable number.

555155664 is an abundant number, since it is smaller than the sum of its proper divisors (1086441648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

555155664 is a wasteful number, since it uses less digits than its factorization.

555155664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604 (or 2598 counting only the distinct ones).

The product of its digits is 450000, while the sum is 42.

The square root of 555155664 is about 23561.7415315592. The cubic root of 555155664 is about 821.8734006224.

The spelling of 555155664 in words is "five hundred fifty-five million, one hundred fifty-five thousand, six hundred sixty-four".