551138 has 8 divisors (see below), whose sum is σ = 944832. Its totient is φ = 236196.

The previous prime is 551129. The next prime is 551143. The reversal of 551138 is 831155.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19670 + ... + 19697.

It is an arithmetic number, because the mean of its divisors is an integer number (118104).

2⁵⁵¹¹³⁸ is an apocalyptic number.

551138 is a deficient number, since it is larger than the sum of its proper divisors (393694).

551138 is a wasteful number, since it uses less digits than its factorization.

551138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39376.

The product of its digits is 600, while the sum is 23.

The square root of 551138 is about 742.3866916911. The cubic root of 551138 is about 81.9885964709.

The spelling of 551138 in words is "five hundred fifty-one thousand, one hundred thirty-eight".