4005550 has 12 divisors (see below), whose sum is σ = 7450416. Its totient is φ = 1602200.

The previous prime is 4005539. The next prime is 4005553. The reversal of 4005550 is 555004.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40006 + ... + 40105.

It is an arithmetic number, because the mean of its divisors is an integer number (620868).

Almost surely, 2^4005550 is an apocalyptic number.

4005550 is a deficient number, since it is larger than the sum of its proper divisors (3444866).

4005550 is a wasteful number, since it uses less digits than its factorization.

4005550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80123 (or 80118 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 4005550 is about 2001.3870190445. The cubic root of 4005550 is about 158.8134885661.

The spelling of 4005550 in words is "four million, five thousand, five hundred fifty".