521153087 has 8 divisors (see below), whose sum is σ = 641419296. Its totient is φ = 412340832.

The previous prime is 521153053. The next prime is 521153107. The reversal of 521153087 is 780351125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 521153087 - 2¹⁶ = 521087551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521153387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2863388 + ... + 2863569.

It is an arithmetic number, because the mean of its divisors is an integer number (80177412).

Almost surely, 2^521153087 is an apocalyptic number.

521153087 is a deficient number, since it is larger than the sum of its proper divisors (120266209).

521153087 is a wasteful number, since it uses less digits than its factorization.

521153087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5726977.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 521153087 is about 22828.7776063459. Note that the first 3 decimals coincide. The cubic root of 521153087 is about 804.7391034996.

The spelling of 521153087 in words is "five hundred twenty-one million, one hundred fifty-three thousand, eighty-seven".