550951 has 2 divisors, whose sum is σ = 550952. Its totient is φ = 550950.

The previous prime is 550939. The next prime is 550961. The reversal of 550951 is 159055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 550951 - 2⁹ = 550439 is a prime.

550951 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275475 + 275476.

It is an arithmetic number, because the mean of its divisors is an integer number (275476).

2⁵⁵⁰⁹⁵¹ is an apocalyptic number.

550951 is a deficient number, since it is larger than the sum of its proper divisors (1).

550951 is an equidigital number, since it uses as much as digits as its factorization.

550951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1125, while the sum is 25.

The square root of 550951 is about 742.2607358604. The cubic root of 550951 is about 81.9793225674.

The spelling of 550951 in words is "five hundred fifty thousand, nine hundred fifty-one".