151601603 has 2 divisors, whose sum is σ = 151601604. Its totient is φ = 151601602.

The previous prime is 151601587. The next prime is 151601623. The reversal of 151601603 is 306106151.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 151601603 - 2⁴ = 151601587 is a prime.

It is not a weakly prime, because it can be changed into another prime (151601623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75800801 + 75800802.

It is an arithmetic number, because the mean of its divisors is an integer number (75800802).

Almost surely, 2^151601603 is an apocalyptic number.

151601603 is a deficient number, since it is larger than the sum of its proper divisors (1).

151601603 is an equidigital number, since it uses as much as digits as its factorization.

151601603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 151601603 is about 12312.6602730685. The cubic root of 151601603 is about 533.2136572187.

Adding to 151601603 its reverse (306106151), we get a palindrome (457707754).

The spelling of 151601603 in words is "one hundred fifty-one million, six hundred one thousand, six hundred three".