1491233 has 2 divisors, whose sum is σ = 1491234. Its totient is φ = 1491232.

The previous prime is 1491227. The next prime is 1491239. The reversal of 1491233 is 3321941.

It is a balanced prime because it is at equal distance from previous prime (1491227) and next prime (1491239).

It can be written as a sum of positive squares in only one way, i.e., 1373584 + 117649 = 1172^2 + 343^2 .

It is a cyclic number.

It is not a de Polignac number, because 1491233 - 2¹⁴ = 1474849 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1491199 and 1491208.

It is not a weakly prime, because it can be changed into another prime (1491239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745616 + 745617.

It is an arithmetic number, because the mean of its divisors is an integer number (745617).

2^1491233 is an apocalyptic number.

It is an amenable number.

1491233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491233 is an equidigital number, since it uses as much as digits as its factorization.

1491233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 23.

The square root of 1491233 is about 1221.1605136099. The cubic root of 1491233 is about 114.2479725822.

The spelling of 1491233 in words is "one million, four hundred ninety-one thousand, two hundred thirty-three".