551977 has 8 divisors (see below), whose sum is σ = 584064. Its totient is φ = 520608.

The previous prime is 551963. The next prime is 551981. The reversal of 551977 is 779155.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551977 - 2⁷ = 551849 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2253 + ... + 2485.

It is an arithmetic number, because the mean of its divisors is an integer number (73008).

2⁵⁵¹⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

551977 is a deficient number, since it is larger than the sum of its proper divisors (32087).

551977 is a wasteful number, since it uses less digits than its factorization.

551977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359.

The product of its digits is 11025, while the sum is 34.

The square root of 551977 is about 742.9515461993. The cubic root of 551977 is about 82.0301792544.

The spelling of 551977 in words is "five hundred fifty-one thousand, nine hundred seventy-seven".