109009057 has 4 divisors (see below), whose sum is σ = 112768020. Its totient is φ = 105250096.

The previous prime is 109009003. The next prime is 109009063. The reversal of 109009057 is 750900901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 750900901 = 2671 ⋅281131.

It can be written as a sum of positive squares in 2 ways, for example, as 63297936 + 45711121 = 7956^2 + 6761^2 .

It is a cyclic number.

It is not a de Polignac number, because 109009057 - 2¹⁵ = 108976289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109009097) 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, 1879438 + ... + 1879495.

It is an arithmetic number, because the mean of its divisors is an integer number (28192005).

Almost surely, 2^109009057 is an apocalyptic number.

It is an amenable number.

109009057 is a deficient number, since it is larger than the sum of its proper divisors (3758963).

109009057 is an equidigital number, since it uses as much as digits as its factorization.

109009057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3758962.

The product of its (nonzero) digits is 2835, while the sum is 31.

The square root of 109009057 is about 10440.7402515339. The cubic root of 109009057 is about 477.6988483140.

Adding to 109009057 its reverse (750900901), we get a palindrome (859909958).

The spelling of 109009057 in words is "one hundred nine million, nine thousand, fifty-seven".