109777451 has 4 divisors (see below), whose sum is σ = 125459952. Its totient is φ = 94094952.

The previous prime is 109777439. The next prime is 109777457. The reversal of 109777451 is 154777901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154777901 = 29 ⋅5337169.

It is a de Polignac number, because none of the positive numbers 2^k-109777451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109777399 and 109777408.

It is not an unprimeable number, because it can be changed into a prime (109777457) 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, 7841240 + ... + 7841253.

It is an arithmetic number, because the mean of its divisors is an integer number (31364988).

Almost surely, 2^109777451 is an apocalyptic number.

109777451 is a deficient number, since it is larger than the sum of its proper divisors (15682501).

109777451 is an equidigital number, since it uses as much as digits as its factorization.

109777451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15682500.

The product of its (nonzero) digits is 61740, while the sum is 41.

The square root of 109777451 is about 10477.4735027105. The cubic root of 109777451 is about 478.8186385464.

The spelling of 109777451 in words is "one hundred nine million, seven hundred seventy-seven thousand, four hundred fifty-one".