1546861 has 2 divisors, whose sum is σ = 1546862. Its totient is φ = 1546860.

The previous prime is 1546837. The next prime is 1546873. The reversal of 1546861 is 1686451.

1546861 = T₁₀₁₄ + T₁₀₁₅ + T₁₀₁₆.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1394761 + 152100 = 1181^2 + 390^2 .

It is a cyclic number.

It is not a de Polignac number, because 1546861 - 2¹⁹ = 1022573 is a prime.

It is a super-3 number, since 3×1546861³ = 11103889333539226143, which contains 333 as substring.

It is a Chen prime.

1546861 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1546261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 773430 + 773431.

It is an arithmetic number, because the mean of its divisors is an integer number (773431).

2^1546861 is an apocalyptic number.

1546861 is the 1016-th centered triangular number.

It is an amenable number.

1546861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1546861 is an equidigital number, since it uses as much as digits as its factorization.

1546861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 31.

The square root of 1546861 is about 1243.7286681588. The cubic root of 1546861 is about 115.6512763266.

The spelling of 1546861 in words is "one million, five hundred forty-six thousand, eight hundred sixty-one".