55830511 has 4 divisors (see below), whose sum is σ = 60906024. Its totient is φ = 50755000.

The previous prime is 55830491. The next prime is 55830517. The reversal of 55830511 is 11503855.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55830511 - 2¹⁵ = 55797743 is a prime.

It is a super-2 number, since 2×55830511² = 6234091917042242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55830511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55830517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2537740 + ... + 2537761.

It is an arithmetic number, because the mean of its divisors is an integer number (15226506).

Almost surely, 2^55830511 is an apocalyptic number.

55830511 is a deficient number, since it is larger than the sum of its proper divisors (5075513).

55830511 is a wasteful number, since it uses less digits than its factorization.

55830511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5075512.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 55830511 is about 7471.9817317764. The cubic root of 55830511 is about 382.1998693655.

The spelling of 55830511 in words is "fifty-five million, eight hundred thirty thousand, five hundred eleven".