109557953 has 4 divisors (see below), whose sum is σ = 109585620. Its totient is φ = 109530288.

The previous prime is 109557949. The next prime is 109557967. The reversal of 109557953 is 359755901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 359755901 = 761 ⋅472741.

It can be written as a sum of positive squares in 2 ways, for example, as 50452609 + 59105344 = 7103^2 + 7688^2 .

It is a cyclic number.

It is not a de Polignac number, because 109557953 - 2² = 109557949 is a prime.

It is a super-4 number, since 4×109557953⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109557913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6650 + ... + 16227.

It is an arithmetic number, because the mean of its divisors is an integer number (27396405).

Almost surely, 2^109557953 is an apocalyptic number.

It is an amenable number.

109557953 is a deficient number, since it is larger than the sum of its proper divisors (27667).

109557953 is an equidigital number, since it uses as much as digits as its factorization.

109557953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27666.

The product of its (nonzero) digits is 212625, while the sum is 44.

The square root of 109557953 is about 10466.9935033896. The cubic root of 109557953 is about 478.4992959164.

The spelling of 109557953 in words is "one hundred nine million, five hundred fifty-seven thousand, nine hundred fifty-three".