109555951 has 2 divisors, whose sum is σ = 109555952. Its totient is φ = 109555950.

The previous prime is 109555931. The next prime is 109556017. The reversal of 109555951 is 159555901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109555951 - 2¹³ = 109547759 is a prime.

It is equal to p_6279277 and since 109555951 and 6279277 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109555931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54777975 + 54777976.

It is an arithmetic number, because the mean of its divisors is an integer number (54777976).

Almost surely, 2^109555951 is an apocalyptic number.

109555951 is a deficient number, since it is larger than the sum of its proper divisors (1).

109555951 is an equidigital number, since it uses as much as digits as its factorization.

109555951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50625, while the sum is 40.

The square root of 109555951 is about 10466.8978689963. The cubic root of 109555951 is about 478.4963812902.

The spelling of 109555951 in words is "one hundred nine million, five hundred fifty-five thousand, nine hundred fifty-one".