525213424 has 20 divisors (see below), whose sum is σ = 1021568544. Its totient is φ = 261582848.

The previous prime is 525213397. The next prime is 525213431. The reversal of 525213424 is 424312525.

It is a junction number, because it is equal to n+sod(n) for n = 525213392 and 525213401.

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 3 ways as a sum of consecutive naturals, for example, 59752 + ... + 67975.

Almost surely, 2^525213424 is an apocalyptic number.

It is an amenable number.

525213424 is a deficient number, since it is larger than the sum of its proper divisors (496355120).

525213424 is a wasteful number, since it uses less digits than its factorization.

525213424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127992 (or 127986 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 525213424 is about 22917.5352950530. The cubic root of 525213424 is about 806.8236238836.

Adding to 525213424 its reverse (424312525), we get a palindrome (949525949).

It can be divided in two parts, 52521 and 3424, that added together give a triangular number (55945 = T₃₃₄).

The spelling of 525213424 in words is "five hundred twenty-five million, two hundred thirteen thousand, four hundred twenty-four".