109549457 has 2 divisors, whose sum is σ = 109549458. Its totient is φ = 109549456.

The previous prime is 109549403. The next prime is 109549471. The reversal of 109549457 is 754945901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105185536 + 4363921 = 10256^2 + 2089^2 .

It is a cyclic number.

It is not a de Polignac number, because 109549457 - 2¹² = 109545361 is a prime.

It is not a weakly prime, because it can be changed into another prime (109549157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54774728 + 54774729.

It is an arithmetic number, because the mean of its divisors is an integer number (54774729).

Almost surely, 2^109549457 is an apocalyptic number.

It is an amenable number.

109549457 is a deficient number, since it is larger than the sum of its proper divisors (1).

109549457 is an equidigital number, since it uses as much as digits as its factorization.

109549457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 109549457 is about 10466.5876483217. The cubic root of 109549457 is about 478.4869267090.

The spelling of 109549457 in words is "one hundred nine million, five hundred forty-nine thousand, four hundred fifty-seven".