55355555 has 8 divisors (see below), whose sum is σ = 66470544. Its totient is φ = 44255200.

The previous prime is 55355551. The next prime is 55355561. The reversal of 55355555 is 55555355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55355555 - 2² = 55355551 is a prime.

It is a Duffinian number.

55355555 is a modest number, since divided by 5555 gives 5535 as remainder.

It is not an unprimeable number, because it can be changed into a prime (55355551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8120 + ... + 13290.

It is an arithmetic number, because the mean of its divisors is an integer number (8308818).

Almost surely, 2^55355555 is an apocalyptic number.

55355555 is a deficient number, since it is larger than the sum of its proper divisors (11114989).

55355555 is a wasteful number, since it uses less digits than its factorization.

55355555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7317.

The product of its digits is 234375, while the sum is 38.

The square root of 55355555 is about 7440.1313832486. The cubic root of 55355555 is about 381.1129766480.

The spelling of 55355555 in words is "fifty-five million, three hundred fifty-five thousand, five hundred fifty-five".