321532051 has 2 divisors, whose sum is σ = 321532052. Its totient is φ = 321532050.

The previous prime is 321532039. The next prime is 321532063. The reversal of 321532051 is 150235123.

It is a balanced prime because it is at equal distance from previous prime (321532039) and next prime (321532063).

It is a cyclic number.

It is not a de Polignac number, because 321532051 - 2⁷ = 321531923 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (321532021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160766025 + 160766026.

It is an arithmetic number, because the mean of its divisors is an integer number (160766026).

Almost surely, 2^321532051 is an apocalyptic number.

321532051 is a deficient number, since it is larger than the sum of its proper divisors (1).

321532051 is an equidigital number, since it uses as much as digits as its factorization.

321532051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 321532051 is about 17931.3148151495. The cubic root of 321532051 is about 685.0802122490.

Adding to 321532051 its reverse (150235123), we get a palindrome (471767174).

The spelling of 321532051 in words is "three hundred twenty-one million, five hundred thirty-two thousand, fifty-one".