55432511 has 4 divisors (see below), whose sum is σ = 55477800. Its totient is φ = 55387224.

The previous prime is 55432499. The next prime is 55432513. The reversal of 55432511 is 11523455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11523455 = 5 ⋅2304691.

It is a cyclic number.

It is not a de Polignac number, because 55432511 - 2²² = 51238207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55432513) 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, 20756 + ... + 23273.

It is an arithmetic number, because the mean of its divisors is an integer number (13869450).

Almost surely, 2^55432511 is an apocalyptic number.

55432511 is a deficient number, since it is larger than the sum of its proper divisors (45289).

55432511 is a wasteful number, since it uses less digits than its factorization.

55432511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45288.

The product of its digits is 3000, while the sum is 26.

The square root of 55432511 is about 7445.3012699286. The cubic root of 55432511 is about 381.2895042466.

Adding to 55432511 its reverse (11523455), we get a palindrome (66955966).

The spelling of 55432511 in words is "fifty-five million, four hundred thirty-two thousand, five hundred eleven".