521122055 has 8 divisors (see below), whose sum is σ = 625834944. Its totient is φ = 416572000.

The previous prime is 521122051. The next prime is 521122099. The reversal of 521122055 is 550221125.

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

It is not a de Polignac number, because 521122055 - 2² = 521122051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 521122055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521122051) 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, 33551 + ... + 46560.

It is an arithmetic number, because the mean of its divisors is an integer number (78229368).

Almost surely, 2^521122055 is an apocalyptic number.

521122055 is a deficient number, since it is larger than the sum of its proper divisors (104712889).

521122055 is a wasteful number, since it uses less digits than its factorization.

521122055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81417.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 521122055 is about 22828.0979277731. The cubic root of 521122055 is about 804.7231304838.

The spelling of 521122055 in words is "five hundred twenty-one million, one hundred twenty-two thousand, fifty-five".