2145510 has 48 divisors (see below), whose sum is σ = 5765760. Its totient is φ = 552960.

The previous prime is 2145497. The next prime is 2145529. The reversal of 2145510 is 155412.

2145510 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2406 + ... + 3174.

It is an arithmetic number, because the mean of its divisors is an integer number (120120).

2^2145510 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2145510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2882880).

2145510 is an abundant number, since it is smaller than the sum of its proper divisors (3620250).

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

2145510 is a wasteful number, since it uses less digits than its factorization.

2145510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 2145510 is about 1464.7559523689. The cubic root of 2145510 is about 128.9763793060.

The spelling of 2145510 in words is "two million, one hundred forty-five thousand, five hundred ten".