525143540 has 24 divisors (see below), whose sum is σ = 1105213032. Its totient is φ = 209598080.

The previous prime is 525143533. The next prime is 525143551. The reversal of 525143540 is 45341525.

It can be written as a sum of positive squares in 4 ways, for example, as 484 + 525143056 = 22^2 + 22916^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19259 + ... + 37698.

It is an arithmetic number, because the mean of its divisors is an integer number (46050543).

Almost surely, 2^525143540 is an apocalyptic number.

It is an amenable number.

525143540 is an abundant number, since it is smaller than the sum of its proper divisors (580069492).

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

525143540 is a wasteful number, since it uses less digits than its factorization.

525143540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57427 (or 57425 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 525143540 is about 22916.0105603048. The cubic root of 525143540 is about 806.7878374391.

The spelling of 525143540 in words is "five hundred twenty-five million, one hundred forty-three thousand, five hundred forty".