521254274 has 16 divisors (see below), whose sum is σ = 807909120. Its totient is φ = 251968080.

The previous prime is 521254271. The next prime is 521254297. The reversal of 521254274 is 472452125.

It is a self number, because there is not a number n which added to its sum of digits gives 521254274.

It is not an unprimeable number, because it can be changed into a prime (521254271) 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, 68492 + ... + 75720.

It is an arithmetic number, because the mean of its divisors is an integer number (50494320).

Almost surely, 2^521254274 is an apocalyptic number.

521254274 is a deficient number, since it is larger than the sum of its proper divisors (286654846).

521254274 is a wasteful number, since it uses less digits than its factorization.

521254274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8425.

The product of its digits is 22400, while the sum is 32.

The square root of 521254274 is about 22830.9937146853. The cubic root of 521254274 is about 804.7911828010.

The spelling of 521254274 in words is "five hundred twenty-one million, two hundred fifty-four thousand, two hundred seventy-four".