2455140 has 96 divisors (see below), whose sum is σ = 7620480. Its totient is φ = 587776.

The previous prime is 2455133. The next prime is 2455147. The reversal of 2455140 is 415542.

2455140 = T₁₄₅ + T₁₄₆ + ... + T₂₆₀.

2455140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2455133) and next prime (2455147).

It is not an unprimeable number, because it can be changed into a prime (2455147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29539 + ... + 29621.

It is an arithmetic number, because the mean of its divisors is an integer number (79380).

2^2455140 is an apocalyptic number.

2455140 is a gapful number since it is divisible by the number (20) 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 2455140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3810240).

2455140 is an abundant number, since it is smaller than the sum of its proper divisors (5165340).

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

2455140 is a wasteful number, since it uses less digits than its factorization.

2455140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 2455140 is about 1566.8886367576. Note that the first 3 decimals coincide. The cubic root of 2455140 is about 134.9041844120.

The spelling of 2455140 in words is "two million, four hundred fifty-five thousand, one hundred forty".