109195451 has 4 divisors (see below), whose sum is σ = 114942600. Its totient is φ = 103448304.

The previous prime is 109195409. The next prime is 109195483. The reversal of 109195451 is 154591901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154591901 = 23 ⋅6721387.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109195451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109191451) 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, 2873546 + ... + 2873583.

It is an arithmetic number, because the mean of its divisors is an integer number (28735650).

Almost surely, 2^109195451 is an apocalyptic number.

109195451 is a deficient number, since it is larger than the sum of its proper divisors (5747149).

109195451 is an equidigital number, since it uses as much as digits as its factorization.

109195451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747148.

The product of its (nonzero) digits is 8100, while the sum is 35.

The square root of 109195451 is about 10449.6627218298. The cubic root of 109195451 is about 477.9709648394.

The spelling of 109195451 in words is "one hundred nine million, one hundred ninety-five thousand, four hundred fifty-one".