2145254534 has 4 divisors (see below), whose sum is σ = 3217881804. Its totient is φ = 1072627266.

The previous prime is 2145254519. The next prime is 2145254557. The reversal of 2145254534 is 4354525412.

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

It is a junction number, because it is equal to n+sod(n) for n = 2145254494 and 2145254503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536313632 + ... + 536313635.

It is an arithmetic number, because the mean of its divisors is an integer number (804470451).

Almost surely, 2^2145254534 is an apocalyptic number.

2145254534 is a deficient number, since it is larger than the sum of its proper divisors (1072627270).

2145254534 is a wasteful number, since it uses less digits than its factorization.

2145254534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072627269.

The product of its digits is 96000, while the sum is 35.

The square root of 2145254534 is about 46316.8925339341. The cubic root of 2145254534 is about 1289.7126002779.

Adding to 2145254534 its reverse (4354525412), we get a palindrome (6499779946).

The spelling of 2145254534 in words is "two billion, one hundred forty-five million, two hundred fifty-four thousand, five hundred thirty-four".