536523721 has 2 divisors, whose sum is σ = 536523722. Its totient is φ = 536523720.

The previous prime is 536523709. The next prime is 536523733. The reversal of 536523721 is 127325635.

It is a balanced prime because it is at equal distance from previous prime (536523709) and next prime (536523733).

It can be written as a sum of positive squares in only one way, i.e., 429111225 + 107412496 = 20715^2 + 10364^2 .

It is a cyclic number.

It is not a de Polignac number, because 536523721 - 2²⁵ = 502969289 is a prime.

It is not a weakly prime, because it can be changed into another prime (536523761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268261860 + 268261861.

It is an arithmetic number, because the mean of its divisors is an integer number (268261861).

Almost surely, 2^536523721 is an apocalyptic number.

It is an amenable number.

536523721 is a deficient number, since it is larger than the sum of its proper divisors (1).

536523721 is an equidigital number, since it uses as much as digits as its factorization.

536523721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 34.

The square root of 536523721 is about 23162.9816949373. The cubic root of 536523721 is about 812.5741008867.

The spelling of 536523721 in words is "five hundred thirty-six million, five hundred twenty-three thousand, seven hundred twenty-one".