3257421001 has 2 divisors, whose sum is σ = 3257421002. Its totient is φ = 3257421000.

The previous prime is 3257420989. The next prime is 3257421019. The reversal of 3257421001 is 1001247523.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2935038976 + 322382025 = 54176^2 + 17955^2 .

It is a cyclic number.

It is not a de Polignac number, because 3257421001 - 2⁹ = 3257420489 is a prime.

It is a super-2 number, since 2×3257421001² = 21221583155511684002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3257421031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1628710500 + 1628710501.

It is an arithmetic number, because the mean of its divisors is an integer number (1628710501).

Almost surely, 2^3257421001 is an apocalyptic number.

It is an amenable number.

3257421001 is a deficient number, since it is larger than the sum of its proper divisors (1).

3257421001 is an equidigital number, since it uses as much as digits as its factorization.

3257421001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 3257421001 is about 57073.8206273244. The cubic root of 3257421001 is about 1482.3745969890.

Adding to 3257421001 its reverse (1001247523), we get a palindrome (4258668524).

The spelling of 3257421001 in words is "three billion, two hundred fifty-seven million, four hundred twenty-one thousand, one".