151505604 has 18 divisors (see below), whose sum is σ = 382972590. Its totient is φ = 50501856.

The previous prime is 151505597. The next prime is 151505609. The reversal of 151505604 is 406505151.

It is a happy number.

151505604 is a `hidden beast` number, since 1 + 5 + 1 + 50 + 5 + 604 = 666.

It can be written as a sum of positive squares in only one way, i.e., 135489600 + 16016004 = 11640^2 + 4002^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (151505609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2104209 + ... + 2104280.

It is an arithmetic number, because the mean of its divisors is an integer number (21276255).

Almost surely, 2^151505604 is an apocalyptic number.

It is an amenable number.

151505604 is an abundant number, since it is smaller than the sum of its proper divisors (231466986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

151505604 is a wasteful number, since it uses less digits than its factorization.

151505604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4208499 (or 4208494 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 151505604 is about 12308.7612699248. The cubic root of 151505604 is about 533.1010841208.

The spelling of 151505604 in words is "one hundred fifty-one million, five hundred five thousand, six hundred four".