109249951 has 2 divisors, whose sum is σ = 109249952. Its totient is φ = 109249950.

The previous prime is 109249891. The next prime is 109249961. The reversal of 109249951 is 159942901.

It is a strong prime.

It is an emirp because it is prime and its reverse (159942901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109249951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109249961) 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, 54624975 + 54624976.

It is an arithmetic number, because the mean of its divisors is an integer number (54624976).

Almost surely, 2^109249951 is an apocalyptic number.

109249951 is a deficient number, since it is larger than the sum of its proper divisors (1).

109249951 is an equidigital number, since it uses as much as digits as its factorization.

109249951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 109249951 is about 10452.2701361953. The cubic root of 109249951 is about 478.0504708529.

The spelling of 109249951 in words is "one hundred nine million, two hundred forty-nine thousand, nine hundred fifty-one".