1525540 has 24 divisors (see below), whose sum is σ = 3245760. Its totient is φ = 602208.

The previous prime is 1525507. The next prime is 1525561. The reversal of 1525540 is 455251.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1201 + ... + 2119.

It is an arithmetic number, because the mean of its divisors is an integer number (135240).

2^1525540 is an apocalyptic number.

1525540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1525540 is an abundant number, since it is smaller than the sum of its proper divisors (1720220).

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

1525540 is a wasteful number, since it uses less digits than its factorization.

1525540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011 (or 1009 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1525540 is about 1235.1275237804. The cubic root of 1525540 is about 115.1174603261.

The spelling of 1525540 in words is "one million, five hundred twenty-five thousand, five hundred forty".