55508071 has 4 divisors (see below), whose sum is σ = 55594512. Its totient is φ = 55421632.

The previous prime is 55508027. The next prime is 55508107. The reversal of 55508071 is 17080555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17080555 = 5 ⋅3416111.

It is a cyclic number.

It is not a de Polignac number, because 55508071 - 2¹¹ = 55506023 is a prime.

It is a super-2 number, since 2×55508071² = 6162291892282082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55508021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42250 + ... + 43543.

It is an arithmetic number, because the mean of its divisors is an integer number (13898628).

Almost surely, 2^55508071 is an apocalyptic number.

55508071 is a deficient number, since it is larger than the sum of its proper divisors (86441).

55508071 is an equidigital number, since it uses as much as digits as its factorization.

55508071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86440.

The product of its (nonzero) digits is 7000, while the sum is 31.

The square root of 55508071 is about 7450.3738832357. The cubic root of 55508071 is about 381.4626707026.

The spelling of 55508071 in words is "fifty-five million, five hundred eight thousand, seventy-one".