551846 has 4 divisors (see below), whose sum is σ = 827772. Its totient is φ = 275922.

The previous prime is 551843. The next prime is 551849. The reversal of 551846 is 648155.

It is a happy number.

551846 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 648155 = 5 ⋅129631.

It is an interprime number because it is at equal distance from previous prime (551843) and next prime (551849).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137960 + ... + 137963.

It is an arithmetic number, because the mean of its divisors is an integer number (206943).

2⁵⁵¹⁸⁴⁶ is an apocalyptic number.

551846 is a deficient number, since it is larger than the sum of its proper divisors (275926).

551846 is a wasteful number, since it uses less digits than its factorization.

551846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275925.

The product of its digits is 4800, while the sum is 29.

The square root of 551846 is about 742.8633790947. The cubic root of 551846 is about 82.0236893682.

It can be divided in two parts, 5518 and 46, that multiplied together give a triangular number (253828 = T₇₁₂).

The spelling of 551846 in words is "five hundred fifty-one thousand, eight hundred forty-six".