1525604 has 6 divisors (see below), whose sum is σ = 2669814. Its totient is φ = 762800.

The previous prime is 1525571. The next prime is 1525607. The reversal of 1525604 is 4065251.

It can be written as a sum of positive squares in only one way, i.e., 1464100 + 61504 = 1210^2 + 248^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1525604.

It is not an unprimeable number, because it can be changed into a prime (1525607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190697 + ... + 190704.

It is an arithmetic number, because the mean of its divisors is an integer number (444969).

2^1525604 is an apocalyptic number.

It is an amenable number.

1525604 is a deficient number, since it is larger than the sum of its proper divisors (1144210).

1525604 is a wasteful number, since it uses less digits than its factorization.

1525604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381405 (or 381403 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1525604 is about 1235.1534317647. The cubic root of 1525604 is about 115.1190701199.

The spelling of 1525604 in words is "one million, five hundred twenty-five thousand, six hundred four".