2552861 has 2 divisors, whose sum is σ = 2552862. Its totient is φ = 2552860.

The previous prime is 2552857. The next prime is 2552887. The reversal of 2552861 is 1682552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2544025 + 8836 = 1595^2 + 94^2 .

It is a cyclic number.

It is not a de Polignac number, because 2552861 - 2² = 2552857 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2552461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1276430 + 1276431.

It is an arithmetic number, because the mean of its divisors is an integer number (1276431).

2^2552861 is an apocalyptic number.

It is an amenable number.

2552861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2552861 is an equidigital number, since it uses as much as digits as its factorization.

2552861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 29.

The square root of 2552861 is about 1597.7675049894. The cubic root of 2552861 is about 136.6707956978.

The spelling of 2552861 in words is "two million, five hundred fifty-two thousand, eight hundred sixty-one".