125550543 has 4 divisors (see below), whose sum is σ = 167400728. Its totient is φ = 83700360.

The previous prime is 125550539. The next prime is 125550547. The reversal of 125550543 is 345055521.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (125550539) and next prime (125550547).

It is not a de Polignac number, because 125550543 - 2² = 125550539 is a prime.

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 125550543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125550547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20925088 + ... + 20925093.

It is an arithmetic number, because the mean of its divisors is an integer number (41850182).

Almost surely, 2^125550543 is an apocalyptic number.

125550543 is a deficient number, since it is larger than the sum of its proper divisors (41850185).

125550543 is an equidigital number, since it uses as much as digits as its factorization.

125550543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41850184.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 125550543 is about 11204.9338686134. The cubic root of 125550543 is about 500.7329822822.

It can be divided in two parts, 12 and 5550543, that added together give a palindrome (5550555).

The spelling of 125550543 in words is "one hundred twenty-five million, five hundred fifty thousand, five hundred forty-three".