55005055 has 16 divisors (see below), whose sum is σ = 75691584. Its totient is φ = 37589760.

The previous prime is 55005037. The next prime is 55005073. The reversal of 55005055 is 55050055.

It is an interprime number because it is at equal distance from previous prime (55005037) and next prime (55005073).

It is not a de Polignac number, because 55005055 - 2⁵ = 55005023 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8445 + ... + 13465.

It is an arithmetic number, because the mean of its divisors is an integer number (4730724).

Almost surely, 2^55005055 is an apocalyptic number.

55005055 is a deficient number, since it is larger than the sum of its proper divisors (20686529).

55005055 is a wasteful number, since it uses less digits than its factorization.

55005055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5346.

The product of its (nonzero) digits is 3125, while the sum is 25.

The square root of 55005055 is about 7416.5392872957. The cubic root of 55005055 is about 380.3068965827.

The spelling of 55005055 in words is "fifty-five million, five thousand, fifty-five".