1905061 has 4 divisors (see below), whose sum is σ = 1911052. Its totient is φ = 1899072.

The previous prime is 1905053. The next prime is 1905077. The reversal of 1905061 is 1605091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1605091 = 353 ⋅4547.

It can be written as a sum of positive squares in 2 ways, for example, as 1012036 + 893025 = 1006^2 + 945^2 .

It is a cyclic number.

It is not a de Polignac number, because 1905061 - 2³ = 1905053 is a prime.

It is a Duffinian number.

1905061 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1905031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2490 + ... + 3163.

It is an arithmetic number, because the mean of its divisors is an integer number (477763).

2^1905061 is an apocalyptic number.

It is an amenable number.

1905061 is a deficient number, since it is larger than the sum of its proper divisors (5991).

1905061 is an equidigital number, since it uses as much as digits as its factorization.

1905061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5990.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 1905061 is about 1380.2394719758. The cubic root of 1905061 is about 123.9661067617.

It can be divided in two parts, 19050 and 61, that multiplied together give a triangular number (1162050 = T₁₅₂₄).

The spelling of 1905061 in words is "one million, nine hundred five thousand, sixty-one".