532686421 has 2 divisors, whose sum is σ = 532686422. Its totient is φ = 532686420.

The previous prime is 532686383. The next prime is 532686431. The reversal of 532686421 is 124686235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 507826225 + 24860196 = 22535^2 + 4986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-532686421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (532686431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266343210 + 266343211.

It is an arithmetic number, because the mean of its divisors is an integer number (266343211).

Almost surely, 2^532686421 is an apocalyptic number.

It is an amenable number.

532686421 is a deficient number, since it is larger than the sum of its proper divisors (1).

532686421 is an equidigital number, since it uses as much as digits as its factorization.

532686421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 37.

The square root of 532686421 is about 23080.0004549393. Note that the first 3 decimals coincide. The cubic root of 532686421 is about 810.6322457917.

The spelling of 532686421 in words is "five hundred thirty-two million, six hundred eighty-six thousand, four hundred twenty-one".