1954561 has 12 divisors (see below), whose sum is σ = 2300292. Its totient is φ = 1655808.

The previous prime is 1954553. The next prime is 1954573. The reversal of 1954561 is 1654591.

It can be written as a sum of positive squares in 2 ways, for example, as 313600 + 1640961 = 560^2 + 1281^2 .

It is not a de Polignac number, because 1954561 - 2³ = 1954553 is a prime.

It is a d-powerful number, because it can be written as 1 + 9 + 5³ + 4 + 5⁹ + 6⁴ + 1 .

It is a Duffinian number.

1954561 is a lucky number.

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5361 + ... + 5713.

It is an arithmetic number, because the mean of its divisors is an integer number (191691).

2^1954561 is an apocalyptic number.

It is an amenable number.

1954561 is a deficient number, since it is larger than the sum of its proper divisors (345731).

1954561 is a wasteful number, since it uses less digits than its factorization.

1954561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 473 counting only the distinct ones).

The product of its digits is 5400, while the sum is 31.

The square root of 1954561 is about 1398.0561505176. The cubic root of 1954561 is about 125.0306271619.

The spelling of 1954561 in words is "one million, nine hundred fifty-four thousand, five hundred sixty-one".