525153213 has 40 divisors (see below), whose sum is σ = 847847000. Its totient is φ = 322019712.

The previous prime is 525153197. The next prime is 525153241. The reversal of 525153213 is 312351525.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1750329 + 523402884 = 1323^2 + 22878^2 .

It is not a de Polignac number, because 525153213 - 2⁴ = 525153197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525153283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 366783 + ... + 368211.

It is an arithmetic number, because the mean of its divisors is an integer number (21196175).

Almost surely, 2^525153213 is an apocalyptic number.

It is an amenable number.

525153213 is a deficient number, since it is larger than the sum of its proper divisors (322693787).

525153213 is a wasteful number, since it uses less digits than its factorization.

525153213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803 (or 1794 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 525153213 is about 22916.2216126481. The cubic root of 525153213 is about 806.7927910123.

The spelling of 525153213 in words is "five hundred twenty-five million, one hundred fifty-three thousand, two hundred thirteen".