19597055 has 4 divisors (see below), whose sum is σ = 23516472. Its totient is φ = 15677640.

The previous prime is 19597003. The next prime is 19597063. The reversal of 19597055 is 55079591.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-19597055 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1959701 + ... + 1959710.

It is an arithmetic number, because the mean of its divisors is an integer number (5879118).

Almost surely, 2^19597055 is an apocalyptic number.

19597055 is a deficient number, since it is larger than the sum of its proper divisors (3919417).

19597055 is an equidigital number, since it uses as much as digits as its factorization.

19597055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3919416.

The product of its (nonzero) digits is 70875, while the sum is 41.

The square root of 19597055 is about 4426.8561078942. The cubic root of 19597055 is about 269.6064453768.

The spelling of 19597055 in words is "nineteen million, five hundred ninety-seven thousand, fifty-five".