1520053603 has 2 divisors, whose sum is σ = 1520053604. Its totient is φ = 1520053602.

The previous prime is 1520053567. The next prime is 1520053607. The reversal of 1520053603 is 3063500251.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1520053603 - 2¹⁷ = 1519922531 is a prime.

It is not a weakly prime, because it can be changed into another prime (1520053607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760026801 + 760026802.

It is an arithmetic number, because the mean of its divisors is an integer number (760026802).

Almost surely, 2^1520053603 is an apocalyptic number.

1520053603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520053603 is an equidigital number, since it uses as much as digits as its factorization.

1520053603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 1520053603 is about 38987.8648171453. The cubic root of 1520053603 is about 1149.7929313376.

Adding to 1520053603 its reverse (3063500251), we get a palindrome (4583553854).

The spelling of 1520053603 in words is "one billion, five hundred twenty million, fifty-three thousand, six hundred three".