3321000257 has 4 divisors (see below), whose sum is σ = 3346351536. Its totient is φ = 3295648980.

The previous prime is 3321000251. The next prime is 3321000259. The reversal of 3321000257 is 7520001233.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7520001233 = 109 ⋅68990837.

It is a cyclic number.

It is not a de Polignac number, because 3321000257 - 2²² = 3316805953 is a prime.

It is a super-2 number, since 2×3321000257² = 22058085413988132098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3321000251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12675443 + ... + 12675704.

It is an arithmetic number, because the mean of its divisors is an integer number (836587884).

Almost surely, 2^3321000257 is an apocalyptic number.

It is an amenable number.

3321000257 is a deficient number, since it is larger than the sum of its proper divisors (25351279).

3321000257 is a wasteful number, since it uses less digits than its factorization.

3321000257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25351278.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 3321000257 is about 57628.1203667099. The cubic root of 3321000257 is about 1491.9569884663.

The spelling of 3321000257 in words is "three billion, three hundred twenty-one million, two hundred fifty-seven", and thus it is an aban number.