535251021 has 4 divisors (see below), whose sum is σ = 713668032. Its totient is φ = 356834012.

The previous prime is 535251019. The next prime is 535251077. The reversal of 535251021 is 120152535.

It is a happy number.

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 535251021 - 2¹ = 535251019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 535250982 and 535251000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (535251011) 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 3 ways as a sum of consecutive naturals, for example, 89208501 + ... + 89208506.

It is an arithmetic number, because the mean of its divisors is an integer number (178417008).

Almost surely, 2^535251021 is an apocalyptic number.

It is an amenable number.

535251021 is a deficient number, since it is larger than the sum of its proper divisors (178417011).

535251021 is a wasteful number, since it uses less digits than its factorization.

535251021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178417010.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 535251021 is about 23135.4926681927. The cubic root of 535251021 is about 811.9310837391.

The spelling of 535251021 in words is "five hundred thirty-five million, two hundred fifty-one thousand, twenty-one".