2557951 has 8 divisors (see below), whose sum is σ = 2937600. Its totient is φ = 2202840.

The previous prime is 2557937. The next prime is 2557957. The reversal of 2557951 is 1597552.

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

It is a cyclic number.

It is not a de Polignac number, because 2557951 - 2⁷ = 2557823 is a prime.

It is a super-2 number, since 2×2557951² = 13086226636802, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

2557951 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557957) 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, 5911 + ... + 6328.

It is an arithmetic number, because the mean of its divisors is an integer number (367200).

2^2557951 is an apocalyptic number.

2557951 is a deficient number, since it is larger than the sum of its proper divisors (379649).

2557951 is a wasteful number, since it uses less digits than its factorization.

2557951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12269.

The product of its digits is 15750, while the sum is 34.

The square root of 2557951 is about 1599.3595593237. The cubic root of 2557951 is about 136.7615686933.

The spelling of 2557951 in words is "two million, five hundred fifty-seven thousand, nine hundred fifty-one".