5145140 has 96 divisors (see below), whose sum is σ = 14563584. Its totient is φ = 1474560.

The previous prime is 5145139. The next prime is 5145149. The reversal of 5145140 is 415415.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5145149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19892 + ... + 20148.

It is an arithmetic number, because the mean of its divisors is an integer number (151704).

Almost surely, 2^5145140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5145140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7281792).

5145140 is an abundant number, since it is smaller than the sum of its proper divisors (9418444).

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

5145140 is a wasteful number, since it uses less digits than its factorization.

5145140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 5145140 is about 2268.2901049028. The cubic root of 5145140 is about 172.6364110379.

The spelling of 5145140 in words is "five million, one hundred forty-five thousand, one hundred forty".