551377 has 4 divisors (see below), whose sum is σ = 570420. Its totient is φ = 532336.

The previous prime is 551363. The next prime is 551381. The reversal of 551377 is 773155.

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

It can be written as a sum of positive squares in 2 ways, for example, as 87616 + 463761 = 296^2 + 681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551377 is a prime.

It is a super-2 number, since 2×551377² = 608033192258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9478 + ... + 9535.

It is an arithmetic number, because the mean of its divisors is an integer number (142605).

2⁵⁵¹³⁷⁷ is an apocalyptic number.

It is an amenable number.

551377 is a deficient number, since it is larger than the sum of its proper divisors (19043).

551377 is a wasteful number, since it uses less digits than its factorization.

551377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19042.

The product of its digits is 3675, while the sum is 28.

The square root of 551377 is about 742.5476415692. The cubic root of 551377 is about 82.0004461606. Note that the first 3 decimals are identical.

The spelling of 551377 in words is "five hundred fifty-one thousand, three hundred seventy-seven".