4555440 has 200 divisors, whose sum is σ = 17104560. Its totient is φ = 1119744.

The previous prime is 4555433. The next prime is 4555489. The reversal of 4555440 is 445554.

4555440 = T₁₁₇ + T₁₁₈ + ... + T₃₀₆.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 123102 + ... + 123138.

Almost surely, 2^4555440 is an apocalyptic number.

4555440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4555440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8552280).

4555440 is an abundant number, since it is smaller than the sum of its proper divisors (12549120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4555440 is a wasteful number, since it uses less digits than its factorization.

4555440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 4555440 is about 2134.3476755206. The cubic root of 4555440 is about 165.7715927726.

The spelling of 4555440 in words is "four million, five hundred fifty-five thousand, four hundred forty".