55151 has 4 divisors (see below), whose sum is σ = 55704. Its totient is φ = 54600.

The previous prime is 55147. The next prime is 55163. The reversal of 55151 is 15155.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55151 - 2² = 55147 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55171) 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, 80 + ... + 341.

It is an arithmetic number, because the mean of its divisors is an integer number (13926).

2⁵⁵¹⁵¹ is an apocalyptic number.

55151 is a deficient number, since it is larger than the sum of its proper divisors (553).

55151 is a wasteful number, since it uses less digits than its factorization.

55151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552.

The product of its digits is 125, while the sum is 17.

The square root of 55151 is about 234.8425004125. The cubic root of 55151 is about 38.0642955834.

The spelling of 55151 in words is "fifty-five thousand, one hundred fifty-one".