1650481 has 4 divisors (see below), whose sum is σ = 1886272. Its totient is φ = 1414692.

The previous prime is 1650463. The next prime is 1650487. The reversal of 1650481 is 1840561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1650481 - 2⁷ = 1650353 is a prime.

It is a super-2 number, since 2×1650481² = 5448175062722, which contains 22 as substring.

It is a Duffinian number.

1650481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1650487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117885 + ... + 117898.

It is an arithmetic number, because the mean of its divisors is an integer number (471568).

2^1650481 is an apocalyptic number.

It is an amenable number.

1650481 is a deficient number, since it is larger than the sum of its proper divisors (235791).

1650481 is an equidigital number, since it uses as much as digits as its factorization.

1650481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235790.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1650481 is about 1284.7104732195. The cubic root of 1650481 is about 118.1780563802.

The spelling of 1650481 in words is "one million, six hundred fifty thousand, four hundred eighty-one".