109451 has 2 divisors, whose sum is σ = 109452. Its totient is φ = 109450.

The previous prime is 109441. The next prime is 109453. The reversal of 109451 is 154901.

109451 = T₁₈₈ + T₁₈₉ + ... + T₁₉₃.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109451 - 2⁶ = 109387 is a prime.

Together with 109453, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 109451.

It is not a weakly prime, because it can be changed into another prime (109453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54725 + 54726.

It is an arithmetic number, because the mean of its divisors is an integer number (54726).

2¹⁰⁹⁴⁵¹ is an apocalyptic number.

109451 is a deficient number, since it is larger than the sum of its proper divisors (1).

109451 is an equidigital number, since it uses as much as digits as its factorization.

109451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 109451 is about 330.8337951298. The cubic root of 109451 is about 47.8343537872.

The spelling of 109451 in words is "one hundred nine thousand, four hundred fifty-one".