45151 has 4 divisors (see below), whose sum is σ = 45592. Its totient is φ = 44712.

The previous prime is 45139. The next prime is 45161. The reversal of 45151 is 15154.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 15154 = 2 ⋅7577.

It is a cyclic number.

It is not a de Polignac number, because 45151 - 2⁵ = 45119 is a prime.

It is a super-2 number, since 2×45151² = 4077225602, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 45151 parts by 300 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45121) 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, 25 + ... + 301.

It is an arithmetic number, because the mean of its divisors is an integer number (11398).

2⁴⁵¹⁵¹ is an apocalyptic number.

45151 is a deficient number, since it is larger than the sum of its proper divisors (441).

45151 is a wasteful number, since it uses less digits than its factorization.

45151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440.

The product of its digits is 100, while the sum is 16.

The square root of 45151 is about 212.4876466998. The cubic root of 45151 is about 35.6086731383.

It can be divided in two parts, 45 and 151, that added together give a square (196 = 14²).

The spelling of 45151 in words is "forty-five thousand, one hundred fifty-one".