151603 has 2 divisors, whose sum is σ = 151604. Its totient is φ = 151602.

The previous prime is 151597. The next prime is 151607. The reversal of 151603 is 306151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 151603 - 2⁹ = 151091 is a prime.

It is not a weakly prime, because it can be changed into another prime (151607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75801 + 75802.

It is an arithmetic number, because the mean of its divisors is an integer number (75802).

2¹⁵¹⁶⁰³ is an apocalyptic number.

151603 is a deficient number, since it is larger than the sum of its proper divisors (1).

151603 is an equidigital number, since it uses as much as digits as its factorization.

151603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 151603 is about 389.3622991508. The cubic root of 151603 is about 53.3215295058.

Adding to 151603 its reverse (306151), we get a palindrome (457754).

The spelling of 151603 in words is "one hundred fifty-one thousand, six hundred three".