1520543 has 2 divisors, whose sum is σ = 1520544. Its totient is φ = 1520542.

The previous prime is 1520539. The next prime is 1520549. The reversal of 1520543 is 3450251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1520543 - 2² = 1520539 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1520549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760271 + 760272.

It is an arithmetic number, because the mean of its divisors is an integer number (760272).

2^1520543 is an apocalyptic number.

1520543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520543 is an equidigital number, since it uses as much as digits as its factorization.

1520543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1520543 is about 1233.1029965092. The cubic root of 1520543 is about 114.9916314011.

Adding to 1520543 its reverse (3450251), we get a palindrome (4970794).

The spelling of 1520543 in words is "one million, five hundred twenty thousand, five hundred forty-three".