109561357 has 2 divisors, whose sum is σ = 109561358. Its totient is φ = 109561356.

The previous prime is 109561321. The next prime is 109561373. The reversal of 109561357 is 753165901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80174116 + 29387241 = 8954^2 + 5421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109561357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109562357) 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 as a sum of consecutive naturals, namely, 54780678 + 54780679.

It is an arithmetic number, because the mean of its divisors is an integer number (54780679).

Almost surely, 2^109561357 is an apocalyptic number.

It is an amenable number.

109561357 is a deficient number, since it is larger than the sum of its proper divisors (1).

109561357 is an equidigital number, since it uses as much as digits as its factorization.

109561357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 109561357 is about 10467.1561085139. The cubic root of 109561357 is about 478.5042515728.

The spelling of 109561357 in words is "one hundred nine million, five hundred sixty-one thousand, three hundred fifty-seven".