2155042453 has 16 divisors (see below), whose sum is σ = 2284064320. Its totient is φ = 2027638656.

The previous prime is 2155042447. The next prime is 2155042457. The reversal of 2155042453 is 3542405512.

It is a de Polignac number, because none of the positive numbers 2^k-2155042453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155042457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2456851 + ... + 2457727.

It is an arithmetic number, because the mean of its divisors is an integer number (142754020).

Almost surely, 2^2155042453 is an apocalyptic number.

It is an amenable number.

2155042453 is a deficient number, since it is larger than the sum of its proper divisors (129021867).

2155042453 is a wasteful number, since it uses less digits than its factorization.

2155042453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 2155042453 is about 46422.4348025823. The cubic root of 2155042453 is about 1291.6711017057.

Adding to 2155042453 its reverse (3542405512), we get a palindrome (5697447965).

The spelling of 2155042453 in words is "two billion, one hundred fifty-five million, forty-two thousand, four hundred fifty-three".