109515001 has 4 divisors (see below), whose sum is σ = 109542052. Its totient is φ = 109487952.

The previous prime is 109514989. The next prime is 109515017. The reversal of 109515001 is 100515901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100515901 = 197 ⋅510233.

It can be written as a sum of positive squares in 2 ways, for example, as 96727225 + 12787776 = 9835^2 + 3576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109515001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109515061) 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 in 3 ways as a sum of consecutive naturals, for example, 6090 + ... + 16003.

It is an arithmetic number, because the mean of its divisors is an integer number (27385513).

Almost surely, 2^109515001 is an apocalyptic number.

It is an amenable number.

109515001 is a deficient number, since it is larger than the sum of its proper divisors (27051).

109515001 is an equidigital number, since it uses as much as digits as its factorization.

109515001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27050.

The product of its (nonzero) digits is 225, while the sum is 22.

The square root of 109515001 is about 10464.9415191868. The cubic root of 109515001 is about 478.4367561444.

The spelling of 109515001 in words is "one hundred nine million, five hundred fifteen thousand, one".