551242 has 16 divisors (see below), whose sum is σ = 905472. Its totient is φ = 250560.

The previous prime is 551233. The next prime is 551269. The reversal of 551242 is 242155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 793 + ... + 1315.

It is an arithmetic number, because the mean of its divisors is an integer number (56592).

2⁵⁵¹²⁴² is an apocalyptic number.

551242 is a deficient number, since it is larger than the sum of its proper divisors (354230).

551242 is a wasteful number, since it uses less digits than its factorization.

551242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573.

The product of its digits is 400, while the sum is 19.

The square root of 551242 is about 742.4567327461. The cubic root of 551242 is about 81.9937532422.

Adding to 551242 its reverse (242155), we get a palindrome (793397).

The spelling of 551242 in words is "five hundred fifty-one thousand, two hundred forty-two".