1975145 has 16 divisors (see below), whose sum is σ = 2643840. Its totient is φ = 1407744.

The previous prime is 1975133. The next prime is 1975147. The reversal of 1975145 is 5415791.

It is a cyclic number.

It is not a de Polignac number, because 1975145 - 2¹⁰ = 1974121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1975147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1004 + ... + 2226.

It is an arithmetic number, because the mean of its divisors is an integer number (165240).

2^1975145 is an apocalyptic number.

It is an amenable number.

1975145 is a deficient number, since it is larger than the sum of its proper divisors (668695).

1975145 is a wasteful number, since it uses less digits than its factorization.

1975145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264.

The product of its digits is 6300, while the sum is 32.

The square root of 1975145 is about 1405.3985199935. The cubic root of 1975145 is about 125.4680055794.

The spelling of 1975145 in words is "one million, nine hundred seventy-five thousand, one hundred forty-five".