2145532534 has 4 divisors (see below), whose sum is σ = 3218298804. Its totient is φ = 1072766266.

The previous prime is 2145532531. The next prime is 2145532553. The reversal of 2145532534 is 4352355412.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2145532534² = 9206619708904922312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2145532534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145532531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536383132 + ... + 536383135.

It is an arithmetic number, because the mean of its divisors is an integer number (804574701).

Almost surely, 2^2145532534 is an apocalyptic number.

2145532534 is a deficient number, since it is larger than the sum of its proper divisors (1072766270).

2145532534 is a wasteful number, since it uses less digits than its factorization.

2145532534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072766269.

The product of its digits is 72000, while the sum is 34.

The square root of 2145532534 is about 46319.8935016047. The cubic root of 2145532534 is about 1289.7683084484.

Adding to 2145532534 its reverse (4352355412), we get a palindrome (6497887946).

The spelling of 2145532534 in words is "two billion, one hundred forty-five million, five hundred thirty-two thousand, five hundred thirty-four".