1525545 has 48 divisors (see below), whose sum is σ = 3144960. Its totient is φ = 669312.

The previous prime is 1525507. The next prime is 1525561. The reversal of 1525545 is 5455251.

It is not a de Polignac number, because 1525545 - 2⁹ = 1525033 is a prime.

It is a Curzon number.

1525545 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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 in 47 ways as a sum of consecutive naturals, for example, 9052 + ... + 9218.

It is an arithmetic number, because the mean of its divisors is an integer number (65520).

2^1525545 is an apocalyptic number.

1525545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1525545 is an abundant number, since it is smaller than the sum of its proper divisors (1619415).

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

1525545 is a wasteful number, since it uses less digits than its factorization.

1525545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 211 counting only the distinct ones).

The product of its digits is 5000, while the sum is 27.

The square root of 1525545 is about 1235.1295478613. The cubic root of 1525545 is about 115.1175860929.

The spelling of 1525545 in words is "one million, five hundred twenty-five thousand, five hundred forty-five".