151961603 has 4 divisors (see below), whose sum is σ = 152118120. Its totient is φ = 151805088.

The previous prime is 151961573. The next prime is 151961617. The reversal of 151961603 is 306169151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 306169151 = 97 ⋅3156383.

It is a cyclic number.

It is not a de Polignac number, because 151961603 - 2⁸ = 151961347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151961603.

It is not an unprimeable number, because it can be changed into a prime (151961903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76793 + ... + 78746.

It is an arithmetic number, because the mean of its divisors is an integer number (38029530).

Almost surely, 2^151961603 is an apocalyptic number.

151961603 is a deficient number, since it is larger than the sum of its proper divisors (156517).

151961603 is an equidigital number, since it uses as much as digits as its factorization.

151961603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156516.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 151961603 is about 12327.2707036067. The cubic root of 151961603 is about 533.6353879695.

The spelling of 151961603 in words is "one hundred fifty-one million, nine hundred sixty-one thousand, six hundred three".