534519721 has 2 divisors, whose sum is σ = 534519722. Its totient is φ = 534519720.

The previous prime is 534519709. The next prime is 534519757. The reversal of 534519721 is 127915435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331058025 + 203461696 = 18195^2 + 14264^2 .

It is a cyclic number.

It is not a de Polignac number, because 534519721 - 2¹¹ = 534517673 is a prime.

It is a super-2 number, since 2×534519721² = 571422664275835682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (534519521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267259860 + 267259861.

It is an arithmetic number, because the mean of its divisors is an integer number (267259861).

Almost surely, 2^534519721 is an apocalyptic number.

It is an amenable number.

534519721 is a deficient number, since it is larger than the sum of its proper divisors (1).

534519721 is an equidigital number, since it uses as much as digits as its factorization.

534519721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 37.

The square root of 534519721 is about 23119.6825453984. The cubic root of 534519721 is about 811.5611415381.

The spelling of 534519721 in words is "five hundred thirty-four million, five hundred nineteen thousand, seven hundred twenty-one".