521043454 has 16 divisors (see below), whose sum is σ = 793080288. Its totient is φ = 256707072.

The previous prime is 521043401. The next prime is 521043463. The reversal of 521043454 is 454340125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39439 + ... + 50965.

It is an arithmetic number, because the mean of its divisors is an integer number (49567518).

Almost surely, 2^521043454 is an apocalyptic number.

521043454 is a deficient number, since it is larger than the sum of its proper divisors (272036834).

521043454 is a wasteful number, since it uses less digits than its factorization.

521043454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11859.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 521043454 is about 22826.3762783320. The cubic root of 521043454 is about 804.6826695703.

Adding to 521043454 its reverse (454340125), we get a palindrome (975383579).

The spelling of 521043454 in words is "five hundred twenty-one million, forty-three thousand, four hundred fifty-four".