4002554 has 12 divisors (see below), whose sum is σ = 6104922. Its totient is φ = 1968120.

The previous prime is 4002553. The next prime is 4002563. The reversal of 4002554 is 4552004.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3150625 + 851929 = 1775^2 + 923^2 .

It is not an unprimeable number, because it can be changed into a prime (4002553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9884 + ... + 10280.

Almost surely, 2^4002554 is an apocalyptic number.

4002554 is a deficient number, since it is larger than the sum of its proper divisors (2102368).

4002554 is an equidigital number, since it uses as much as digits as its factorization.

4002554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 4002554 is about 2000.6383981120. The cubic root of 4002554 is about 158.7738831945.

Adding to 4002554 its reverse (4552004), we get a palindrome (8554558).

The spelling of 4002554 in words is "four million, two thousand, five hundred fifty-four".