2474821 has 2 divisors, whose sum is σ = 2474822. Its totient is φ = 2474820.

The previous prime is 2474789. The next prime is 2474827. The reversal of 2474821 is 1284742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1726596 + 748225 = 1314^2 + 865^2 .

It is a cyclic number.

It is not a de Polignac number, because 2474821 - 2⁵ = 2474789 is a prime.

It is a super-2 number, since 2×2474821² = 12249477964082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2474821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2474827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1237410 + 1237411.

It is an arithmetic number, because the mean of its divisors is an integer number (1237411).

2^2474821 is an apocalyptic number.

It is an amenable number.

2474821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2474821 is an equidigital number, since it uses as much as digits as its factorization.

2474821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3584, while the sum is 28.

The square root of 2474821 is about 1573.1563812921. The cubic root of 2474821 is about 135.2637003899.

The spelling of 2474821 in words is "two million, four hundred seventy-four thousand, eight hundred twenty-one".