124551 has 16 divisors (see below), whose sum is σ = 211200. Its totient is φ = 71064.

The previous prime is 124543. The next prime is 124561. The reversal of 124551 is 155421.

It is not a de Polignac number, because 124551 - 2³ = 124543 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124541) 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, 141 + ... + 518.

It is an arithmetic number, because the mean of its divisors is an integer number (13200).

2¹²⁴⁵⁵¹ is an apocalyptic number.

124551 is the 189-th nonagonal number.

124551 is a deficient number, since it is larger than the sum of its proper divisors (86649).

124551 is an equidigital number, since it uses as much as digits as its factorization.

124551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 669 counting only the distinct ones).

The product of its digits is 200, while the sum is 18.

The square root of 124551 is about 352.9178374636. The cubic root of 124551 is about 49.9400615096.

Adding to 124551 its reverse (155421), we get a palindrome (279972).

It can be divided in two parts, 1245 and 51, that added together give a 4-th power (1296 = 6⁴).

The spelling of 124551 in words is "one hundred twenty-four thousand, five hundred fifty-one".