55055507 has 8 divisors (see below), whose sum is σ = 59396736. Its totient is φ = 50729472.

The previous prime is 55055479. The next prime is 55055569. The reversal of 55055507 is 70555055.

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

It is a cyclic number.

It is not a de Polignac number, because 55055507 - 2⁶ = 55055443 is a prime.

It is a super-2 number, since 2×55055507² = 6062217702054098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55055587) 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, 4403 + ... + 11379.

It is an arithmetic number, because the mean of its divisors is an integer number (7424592).

Almost surely, 2^55055507 is an apocalyptic number.

55055507 is a deficient number, since it is larger than the sum of its proper divisors (4341229).

55055507 is a wasteful number, since it uses less digits than its factorization.

55055507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7597.

The product of its (nonzero) digits is 21875, while the sum is 32.

The square root of 55055507 is about 7419.9398245538. The cubic root of 55055507 is about 380.4231366882.

The spelling of 55055507 in words is "fifty-five million, fifty-five thousand, five hundred seven".