1972505 has 4 divisors (see below), whose sum is σ = 2367012. Its totient is φ = 1578000.

The previous prime is 1972483. The next prime is 1972511. The reversal of 1972505 is 5052791.

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

It can be written as a sum of positive squares in 2 ways, for example, as 797449 + 1175056 = 893^2 + 1084^2 .

It is not a de Polignac number, because 1972505 - 2⁶ = 1972441 is a prime.

It is a Duffinian 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, 197246 + ... + 197255.

It is an arithmetic number, because the mean of its divisors is an integer number (591753).

2^1972505 is an apocalyptic number.

It is an amenable number.

1972505 is a deficient number, since it is larger than the sum of its proper divisors (394507).

1972505 is an equidigital number, since it uses as much as digits as its factorization.

1972505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394506.

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 1972505 is about 1404.4589705648. The cubic root of 1972505 is about 125.4120800276.

The spelling of 1972505 in words is "one million, nine hundred seventy-two thousand, five hundred five".