1465561 has 2 divisors, whose sum is σ = 1465562. Its totient is φ = 1465560.

The previous prime is 1465559. The next prime is 1465567. The reversal of 1465561 is 1655641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 912025 + 553536 = 955^2 + 744^2 .

It is a cyclic number.

It is not a de Polignac number, because 1465561 - 2¹ = 1465559 is a prime.

Together with 1465559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1465567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 732780 + 732781.

It is an arithmetic number, because the mean of its divisors is an integer number (732781).

2^1465561 is an apocalyptic number.

It is an amenable number.

1465561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1465561 is an equidigital number, since it uses as much as digits as its factorization.

1465561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 28.

The square root of 1465561 is about 1210.6035684732. The cubic root of 1465561 is about 113.5885702727.

The spelling of 1465561 in words is "one million, four hundred sixty-five thousand, five hundred sixty-one".