55432539 has 16 divisors (see below), whose sum is σ = 82251040. Its totient is φ = 36897120.

The previous prime is 55432523. The next prime is 55432571. The reversal of 55432539 is 93523455.

It is not a de Polignac number, because 55432539 - 2⁴ = 55432523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55432939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22509 + ... + 24849.

It is an arithmetic number, because the mean of its divisors is an integer number (5140690).

Almost surely, 2^55432539 is an apocalyptic number.

55432539 is a deficient number, since it is larger than the sum of its proper divisors (26818501).

55432539 is a wasteful number, since it uses less digits than its factorization.

55432539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227 (or 3221 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 55432539 is about 7445.3031503089. The cubic root of 55432539 is about 381.2895684454.

The spelling of 55432539 in words is "fifty-five million, four hundred thirty-two thousand, five hundred thirty-nine".