525511801 has 16 divisors (see below), whose sum is σ = 551205648. Its totient is φ = 500531200.

The previous prime is 525511799. The next prime is 525511853. The reversal of 525511801 is 108115525.

It can be written as a sum of positive squares in 8 ways, for example, as 25765776 + 499746025 = 5076^2 + 22355^2 .

It is a cyclic number.

It is not a de Polignac number, because 525511801 - 2¹ = 525511799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 525511801.

It is not an unprimeable number, because it can be changed into a prime (525511891) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 557991 + ... + 558931.

It is an arithmetic number, because the mean of its divisors is an integer number (34450353).

Almost surely, 2^525511801 is an apocalyptic number.

It is an amenable number.

525511801 is a deficient number, since it is larger than the sum of its proper divisors (25693847).

525511801 is a wasteful number, since it uses less digits than its factorization.

525511801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292.

The product of its (nonzero) digits is 2000, while the sum is 28.

The square root of 525511801 is about 22924.0441676420. The cubic root of 525511801 is about 806.9763821260.

The spelling of 525511801 in words is "five hundred twenty-five million, five hundred eleven thousand, eight hundred one".