2551671 has 6 divisors (see below), whose sum is σ = 3685760. Its totient is φ = 1701108.

The previous prime is 2551657. The next prime is 2551687. The reversal of 2551671 is 1761552.

It is not a de Polignac number, because 2551671 - 2⁵ = 2551639 is a prime.

It is a super-2 number, since 2×2551671² = 13022049784482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141751 + ... + 141768.

2^2551671 is an apocalyptic number.

2551671 is a deficient number, since it is larger than the sum of its proper divisors (1134089).

2551671 is a wasteful number, since it uses less digits than its factorization.

2551671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283525 (or 283522 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 2551671 is about 1597.3950669762. The cubic root of 2551671 is about 136.6495563218.

The spelling of 2551671 in words is "two million, five hundred fifty-one thousand, six hundred seventy-one".