2153454545 has 24 divisors (see below), whose sum is σ = 2862892032. Its totient is φ = 1553761440.

The previous prime is 2153454517. The next prime is 2153454551. The reversal of 2153454545 is 5454543512.

It is not a de Polignac number, because 2153454545 - 2¹⁸ = 2153192401 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2153454499 and 2153454508.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62822 + ... + 90848.

It is an arithmetic number, because the mean of its divisors is an integer number (119287168).

Almost surely, 2^2153454545 is an apocalyptic number.

It is an amenable number.

2153454545 is a deficient number, since it is larger than the sum of its proper divisors (709437487).

2153454545 is a wasteful number, since it uses less digits than its factorization.

2153454545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28181 (or 28170 counting only the distinct ones).

The product of its digits is 240000, while the sum is 38.

The square root of 2153454545 is about 46405.3288427094. The cubic root of 2153454545 is about 1291.3537748024.

The spelling of 2153454545 in words is "two billion, one hundred fifty-three million, four hundred fifty-four thousand, five hundred forty-five".