2557001 has 8 divisors (see below), whose sum is σ = 2738400. Its totient is φ = 2380320.

The previous prime is 2556997. The next prime is 2557007. The reversal of 2557001 is 1007552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2557001 - 2² = 2556997 is a prime.

It is a super-2 number, since 2×2557001² = 13076508228002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2557007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20 + ... + 2261.

It is an arithmetic number, because the mean of its divisors is an integer number (342300).

2^2557001 is an apocalyptic number.

It is an amenable number.

2557001 is a deficient number, since it is larger than the sum of its proper divisors (181399).

2557001 is a wasteful number, since it uses less digits than its factorization.

2557001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 2557001 is about 1599.0625378640. The cubic root of 2557001 is about 136.7446359246.

The spelling of 2557001 in words is "two million, five hundred fifty-seven thousand, one".