3125081 has 4 divisors (see below), whose sum is σ = 3171792. Its totient is φ = 3078372.

The previous prime is 3125051. The next prime is 3125099. The reversal of 3125081 is 1805213.

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: 1805213 = 17 ⋅106189.

It is a cyclic number.

It is not a de Polignac number, because 3125081 - 2¹⁰ = 3124057 is a prime.

It is a super-2 number, since 2×3125081² = 19532262513122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3125021) 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, 23255 + ... + 23388.

It is an arithmetic number, because the mean of its divisors is an integer number (792948).

Almost surely, 2^3125081 is an apocalyptic number.

It is an amenable number.

3125081 is a deficient number, since it is larger than the sum of its proper divisors (46711).

3125081 is an equidigital number, since it uses as much as digits as its factorization.

3125081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46710.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 3125081 is about 1767.7898630776. The cubic root of 3125081 is about 146.2021500754.

The spelling of 3125081 in words is "three million, one hundred twenty-five thousand, eighty-one".