1525830 has 32 divisors (see below), whose sum is σ = 3695328. Its totient is φ = 403200.

The previous prime is 1525819. The next prime is 1525831. The reversal of 1525830 is 385251.

It is a self number, because there is not a number n which added to its sum of digits gives 1525830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5290 + ... + 5570.

It is an arithmetic number, because the mean of its divisors is an integer number (115479).

2^1525830 is an apocalyptic number.

1525830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1525830 is an abundant number, since it is smaller than the sum of its proper divisors (2169498).

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

1525830 is a wasteful number, since it uses less digits than its factorization.

1525830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1525830 is about 1235.2449149865. The cubic root of 1525830 is about 115.1247543441.

The spelling of 1525830 in words is "one million, five hundred twenty-five thousand, eight hundred thirty".