1525330 has 8 divisors (see below), whose sum is σ = 2745612. Its totient is φ = 610128.

The previous prime is 1525297. The next prime is 1525331. The reversal of 1525330 is 335251.

1525330 = 129² + 130² + ... + 188².

It can be written as a sum of positive squares in 2 ways, for example, as 1520289 + 5041 = 1233^2 + 71^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1525298 and 1525307.

It is not an unprimeable number, because it can be changed into a prime (1525331) 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, 76257 + ... + 76276.

2^1525330 is an apocalyptic number.

1525330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1525330 is a deficient number, since it is larger than the sum of its proper divisors (1220282).

1525330 is a wasteful number, since it uses less digits than its factorization.

1525330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152540.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 1525330 is about 1235.0425093899. The cubic root of 1525330 is about 115.1121778740.

The spelling of 1525330 in words is "one million, five hundred twenty-five thousand, three hundred thirty".