521225254 has 8 divisors (see below), whose sum is σ = 852914088. Its totient is φ = 236920560.

The previous prime is 521225249. The next prime is 521225261. The reversal of 521225254 is 452522125.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11846007 + ... + 11846050.

It is an arithmetic number, because the mean of its divisors is an integer number (106614261).

Almost surely, 2^521225254 is an apocalyptic number.

521225254 is a deficient number, since it is larger than the sum of its proper divisors (331688834).

521225254 is a wasteful number, since it uses less digits than its factorization.

521225254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23692070.

The product of its digits is 8000, while the sum is 28.

The square root of 521225254 is about 22830.3581662662. The cubic root of 521225254 is about 804.7762473689.

Adding to 521225254 its reverse (452522125), we get a palindrome (973747379).

The spelling of 521225254 in words is "five hundred twenty-one million, two hundred twenty-five thousand, two hundred fifty-four".