55031543 has 32 divisors (see below), whose sum is σ = 69603840. Its totient is φ = 42456960.

The previous prime is 55031527. The next prime is 55031551. The reversal of 55031543 is 34513055.

It is not a de Polignac number, because 55031543 - 2⁴ = 55031527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55031503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260708 + ... + 260918.

It is an arithmetic number, because the mean of its divisors is an integer number (2175120).

Almost surely, 2^55031543 is an apocalyptic number.

55031543 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

55031543 is a deficient number, since it is larger than the sum of its proper divisors (14572297).

55031543 is a wasteful number, since it uses less digits than its factorization.

55031543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 55031543 is about 7418.3248108990. The cubic root of 55031543 is about 380.3679331093.

Adding to 55031543 its reverse (34513055), we get a palindrome (89544598).

The spelling of 55031543 in words is "fifty-five million, thirty-one thousand, five hundred forty-three".