55275555 has 32 divisors (see below), whose sum is σ = 94058496. Its totient is φ = 27657344.

The previous prime is 55275553. The next prime is 55275557. The reversal of 55275555 is 55557255.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55275553) and next prime (55275557).

It is a cyclic number.

It is not a de Polignac number, because 55275555 - 2¹ = 55275553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55275553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16774 + ... + 19796.

It is an arithmetic number, because the mean of its divisors is an integer number (2939328).

Almost surely, 2^55275555 is an apocalyptic number.

55275555 is a deficient number, since it is larger than the sum of its proper divisors (38782941).

55275555 is a wasteful number, since it uses less digits than its factorization.

55275555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107.

The product of its digits is 218750, while the sum is 39.

The square root of 55275555 is about 7434.7531902545. The cubic root of 55275555 is about 380.9292929596.

The spelling of 55275555 in words is "fifty-five million, two hundred seventy-five thousand, five hundred fifty-five".