551042 has 4 divisors (see below), whose sum is σ = 826566. Its totient is φ = 275520.

The previous prime is 551039. The next prime is 551059. The reversal of 551042 is 240155.

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

It can be written as a sum of positive squares in only one way, i.e., 398161 + 152881 = 631^2 + 391^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 551042.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137759 + ... + 137762.

2⁵⁵¹⁰⁴² is an apocalyptic number.

551042 is a deficient number, since it is larger than the sum of its proper divisors (275524).

551042 is a wasteful number, since it uses less digits than its factorization.

551042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275523.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 551042 is about 742.3220325438. The cubic root of 551042 is about 81.9838357986.

Adding to 551042 its reverse (240155), we get a palindrome (791197).

The spelling of 551042 in words is "five hundred fifty-one thousand, forty-two".