551061 has 12 divisors (see below), whose sum is σ = 909792. Its totient is φ = 314856.

The previous prime is 551059. The next prime is 551063. The reversal of 551061 is 160155.

It is an interprime number because it is at equal distance from previous prime (551059) and next prime (551063).

It is not a de Polignac number, because 551061 - 2¹ = 551059 is a prime.

551061 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4311 + ... + 4436.

It is an arithmetic number, because the mean of its divisors is an integer number (75816).

2⁵⁵¹⁰⁶¹ is an apocalyptic number.

It is an amenable number.

551061 is a deficient number, since it is larger than the sum of its proper divisors (358731).

551061 is a wasteful number, since it uses less digits than its factorization.

551061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8760 (or 8757 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 551061 is about 742.3348301137. The cubic root of 551061 is about 81.9847780589.

The spelling of 551061 in words is "five hundred fifty-one thousand, sixty-one".