1525566 has 24 divisors (see below), whose sum is σ = 3549960. Its totient is φ = 435792.

The previous prime is 1525561. The next prime is 1525571. The reversal of 1525566 is 6655251.

It is an interprime number because it is at equal distance from previous prime (1525561) and next prime (1525571).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2301 + ... + 2888.

It is an arithmetic number, because the mean of its divisors is an integer number (147915).

2^1525566 is an apocalyptic number.

1525566 is an abundant number, since it is smaller than the sum of its proper divisors (2024394).

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

1525566 is a wasteful number, since it uses less digits than its factorization.

1525566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5208 (or 5201 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 1525566 is about 1235.1380489646. The cubic root of 1525566 is about 115.1181143103.

The spelling of 1525566 in words is "one million, five hundred twenty-five thousand, five hundred sixty-six".