19750097 has 4 divisors (see below), whose sum is σ = 19761060. Its totient is φ = 19739136.

The previous prime is 19750091. The next prime is 19750109. The reversal of 19750097 is 79005791.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 17673616 + 2076481 = 4204^2 + 1441^2 .

It is a cyclic number.

It is not a de Polignac number, because 19750097 - 2⁶ = 19750033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19750097.

It is not an unprimeable number, because it can be changed into a prime (19750091) 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, 2072 + ... + 6617.

It is an arithmetic number, because the mean of its divisors is an integer number (4940265).

Almost surely, 2^19750097 is an apocalyptic number.

It is an amenable number.

19750097 is a deficient number, since it is larger than the sum of its proper divisors (10963).

19750097 is an equidigital number, since it uses as much as digits as its factorization.

19750097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10962.

The product of its (nonzero) digits is 19845, while the sum is 38.

The square root of 19750097 is about 4444.1081219970. The cubic root of 19750097 is about 270.3064513131.

The spelling of 19750097 in words is "nineteen million, seven hundred fifty thousand, ninety-seven".