535656421 has 2 divisors, whose sum is σ = 535656422. Its totient is φ = 535656420.

The previous prime is 535656413. The next prime is 535656427. The reversal of 535656421 is 124656535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328008321 + 207648100 = 18111^2 + 14410^2 .

It is a cyclic number.

It is not a de Polignac number, because 535656421 - 2³ = 535656413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (535656427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267828210 + 267828211.

It is an arithmetic number, because the mean of its divisors is an integer number (267828211).

Almost surely, 2^535656421 is an apocalyptic number.

It is an amenable number.

535656421 is a deficient number, since it is larger than the sum of its proper divisors (1).

535656421 is an equidigital number, since it uses as much as digits as its factorization.

535656421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 37.

The square root of 535656421 is about 23144.2524398607. The cubic root of 535656421 is about 812.1360179862.

The spelling of 535656421 in words is "five hundred thirty-five million, six hundred fifty-six thousand, four hundred twenty-one".