525213953 has 4 divisors (see below), whose sum is σ = 572960688. Its totient is φ = 477467220.

The previous prime is 525213937. The next prime is 525213959. The reversal of 525213953 is 359312525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 525213953 - 2⁴ = 525213937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (525213959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23873351 + ... + 23873372.

It is an arithmetic number, because the mean of its divisors is an integer number (143240172).

Almost surely, 2^525213953 is an apocalyptic number.

It is an amenable number.

525213953 is a deficient number, since it is larger than the sum of its proper divisors (47746735).

525213953 is a wasteful number, since it uses less digits than its factorization.

525213953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47746734.

The product of its digits is 40500, while the sum is 35.

The square root of 525213953 is about 22917.5468364308. The cubic root of 525213953 is about 806.8238947637.

The spelling of 525213953 in words is "five hundred twenty-five million, two hundred thirteen thousand, nine hundred fifty-three".