2878957 has 2 divisors, whose sum is σ = 2878958. Its totient is φ = 2878956.

The previous prime is 2878921. The next prime is 2878961. The reversal of 2878957 is 7598782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2208196 + 670761 = 1486^2 + 819^2 .

It is a cyclic number.

It is not a de Polignac number, because 2878957 - 2¹⁵ = 2846189 is a prime.

2878957 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2848957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1439478 + 1439479.

It is an arithmetic number, because the mean of its divisors is an integer number (1439479).

2^2878957 is an apocalyptic number.

It is an amenable number.

2878957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2878957 is an equidigital number, since it uses as much as digits as its factorization.

2878957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 46.

The square root of 2878957 is about 1696.7489501986. The cubic root of 2878957 is about 142.2585549220.

The spelling of 2878957 in words is "two million, eight hundred seventy-eight thousand, nine hundred fifty-seven".