521522674 has 16 divisors (see below), whose sum is σ = 787553280. Its totient is φ = 259011280.

The previous prime is 521522671. The next prime is 521522693. The reversal of 521522674 is 476225125.

It is a super-2 number, since 2×521522674² = 543971798992220552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (521522671) 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, 204789 + ... + 207319.

It is an arithmetic number, because the mean of its divisors is an integer number (49222080).

Almost surely, 2^521522674 is an apocalyptic number.

521522674 is a deficient number, since it is larger than the sum of its proper divisors (266030606).

521522674 is a wasteful number, since it uses less digits than its factorization.

521522674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3185.

The product of its digits is 33600, while the sum is 34.

The square root of 521522674 is about 22836.8709327701. The cubic root of 521522674 is about 804.9292912702.

Adding to 521522674 its reverse (476225125), we get a palindrome (997747799).

It can be divided in two parts, 5215 and 22674, that added together give a square (27889 = 167²).

The spelling of 521522674 in words is "five hundred twenty-one million, five hundred twenty-two thousand, six hundred seventy-four".