2478361 has 2 divisors, whose sum is σ = 2478362. Its totient is φ = 2478360.

The previous prime is 2478349. The next prime is 2478367. The reversal of 2478361 is 1638742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1440000 + 1038361 = 1200^2 + 1019^2 .

It is a cyclic number.

It is not a de Polignac number, because 2478361 - 2²¹ = 381209 is a prime.

It is a super-2 number, since 2×2478361² = 12284546492642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2478367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239180 + 1239181.

It is an arithmetic number, because the mean of its divisors is an integer number (1239181).

2^2478361 is an apocalyptic number.

It is an amenable number.

2478361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478361 is an equidigital number, since it uses as much as digits as its factorization.

2478361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The square root of 2478361 is about 1574.2811057750. The cubic root of 2478361 is about 135.3281636880.

The spelling of 2478361 in words is "two million, four hundred seventy-eight thousand, three hundred sixty-one".