1961575 has 24 divisors (see below), whose sum is σ = 3035520. Its totient is φ = 1221600.

The previous prime is 1961551. The next prime is 1961581. The reversal of 1961575 is 5751691.

It is not a de Polignac number, because 1961575 - 2⁷ = 1961447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1961575.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1416 + ... + 2434.

It is an arithmetic number, because the mean of its divisors is an integer number (126480).

2^1961575 is an apocalyptic number.

1961575 is a deficient number, since it is larger than the sum of its proper divisors (1073945).

1961575 is a wasteful number, since it uses less digits than its factorization.

With its successor (1961576) it forms an eRAP, since the sums of their prime factors are consecutive (1047 and 1048).

1961575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047 (or 1042 counting only the distinct ones).

The product of its digits is 9450, while the sum is 34.

The square root of 1961575 is about 1400.5623870431. The cubic root of 1961575 is about 125.1800073212.

It can be divided in two parts, 196 and 1575, that added together give a palindrome (1771).

The spelling of 1961575 in words is "one million, nine hundred sixty-one thousand, five hundred seventy-five".