1975563 has 16 divisors (see below), whose sum is σ = 3081600. Its totient is φ = 1247400.

The previous prime is 1975543. The next prime is 1975573. The reversal of 1975563 is 3655791.

It is a happy number.

1975563 is a `hidden beast` number, since 1 + 97 + 5 + 563 = 666.

It is not a de Polignac number, because 1975563 - 2⁶ = 1975499 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

1975563 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1975543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1413 + ... + 2438.

It is an arithmetic number, because the mean of its divisors is an integer number (192600).

2^1975563 is an apocalyptic number.

1975563 is a deficient number, since it is larger than the sum of its proper divisors (1106037).

1975563 is a wasteful number, since it uses less digits than its factorization.

1975563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3879 (or 3873 counting only the distinct ones).

The product of its digits is 28350, while the sum is 36.

The square root of 1975563 is about 1405.5472243934. The cubic root of 1975563 is about 125.4768558878.

The spelling of 1975563 in words is "one million, nine hundred seventy-five thousand, five hundred sixty-three".