109257445 has 8 divisors (see below), whose sum is σ = 143028000. Its totient is φ = 79459920.

The previous prime is 109257443. The next prime is 109257479. The reversal of 109257445 is 544752901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 109257445 - 2¹ = 109257443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109257443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 993195 + ... + 993304.

It is an arithmetic number, because the mean of its divisors is an integer number (17878500).

Almost surely, 2^109257445 is an apocalyptic number.

It is an amenable number.

109257445 is a deficient number, since it is larger than the sum of its proper divisors (33770555).

109257445 is a wasteful number, since it uses less digits than its factorization.

109257445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986515.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 109257445 is about 10452.6286167643. The cubic root of 109257445 is about 478.0614012264.

The spelling of 109257445 in words is "one hundred nine million, two hundred fifty-seven thousand, four hundred forty-five".