55505065 has 16 divisors (see below), whose sum is σ = 83041920. Its totient is φ = 34600320.

The previous prime is 55505029. The next prime is 55505071. The reversal of 55505065 is 56050555.

It is not a de Polignac number, because 55505065 - 2²³ = 47116457 is a prime.

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, 71700 + ... + 72469.

It is an arithmetic number, because the mean of its divisors is an integer number (5190120).

Almost surely, 2^55505065 is an apocalyptic number.

55505065 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55505065 is a deficient number, since it is larger than the sum of its proper divisors (27536855).

55505065 is a wasteful number, since it uses less digits than its factorization.

55505065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144192.

The product of its (nonzero) digits is 18750, while the sum is 31.

The square root of 55505065 is about 7450.1721456621. The cubic root of 55505065 is about 381.4557846320.

Subtracting 55505065 from its reverse (56050555), we obtain a triangular number (545490 = T₁₀₄₄).

The spelling of 55505065 in words is "fifty-five million, five hundred five thousand, sixty-five".