521014454 has 4 divisors (see below), whose sum is σ = 781521684. Its totient is φ = 260507226.

The previous prime is 521014421. The next prime is 521014457. The reversal of 521014454 is 454410125.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×521014454² = 542912122553836232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521014457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130253612 + ... + 130253615.

It is an arithmetic number, because the mean of its divisors is an integer number (195380421).

Almost surely, 2^521014454 is an apocalyptic number.

521014454 is a deficient number, since it is larger than the sum of its proper divisors (260507230).

521014454 is a wasteful number, since it uses less digits than its factorization.

521014454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260507229.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 521014454 is about 22825.7410394493. The cubic root of 521014454 is about 804.6677404057.

Adding to 521014454 its reverse (454410125), we get a palindrome (975424579).

The spelling of 521014454 in words is "five hundred twenty-one million, fourteen thousand, four hundred fifty-four".