2145030552 has 128 divisors (see below), whose sum is σ = 6844800000. Its totient is φ = 609700608.

The previous prime is 2145030529. The next prime is 2145030557. The reversal of 2145030552 is 2550305412.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145030557) 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, 297324 + ... + 304452.

It is an arithmetic number, because the mean of its divisors is an integer number (53475000).

Almost surely, 2^2145030552 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 2145030552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3422400000).

2145030552 is an abundant number, since it is smaller than the sum of its proper divisors (4699769448).

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

2145030552 is a wasteful number, since it uses less digits than its factorization.

2145030552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7350 (or 7340 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 2145030552 is about 46314.4745409035. The cubic root of 2145030552 is about 1289.6677132249.

Adding to 2145030552 its reverse (2550305412), we get a palindrome (4695335964).

The spelling of 2145030552 in words is "two billion, one hundred forty-five million, thirty thousand, five hundred fifty-two".