955551 has 8 divisors (see below), whose sum is σ = 1278720. Its totient is φ = 634712.

The previous prime is 955541. The next prime is 955601. The reversal of 955551 is 155559.

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 955551 - 2⁹ = 955039 is a prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 955551.

It is not an unprimeable number, because it can be changed into a prime (955501) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 970 + ... + 1688.

It is an arithmetic number, because the mean of its divisors is an integer number (159840).

2⁹⁵⁵⁵⁵¹ is an apocalyptic number.

955551 is a deficient number, since it is larger than the sum of its proper divisors (323169).

955551 is a wasteful number, since it uses less digits than its factorization.

955551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165.

The product of its digits is 5625, while the sum is 30.

The square root of 955551 is about 977.5228897576. The cubic root of 955551 is about 98.4958555979.

The spelling of 955551 in words is "nine hundred fifty-five thousand, five hundred fifty-one".