2154051023 has 4 divisors (see below), whose sum is σ = 2164875600. Its totient is φ = 2143226448.

The previous prime is 2154051019. The next prime is 2154051049. The reversal of 2154051023 is 3201504512.

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

It is a cyclic number.

It is not a de Polignac number, because 2154051023 - 2² = 2154051019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2154051023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154051013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5411990 + ... + 5412387.

It is an arithmetic number, because the mean of its divisors is an integer number (541218900).

Almost surely, 2^2154051023 is an apocalyptic number.

2154051023 is a deficient number, since it is larger than the sum of its proper divisors (10824577).

2154051023 is a wasteful number, since it uses less digits than its factorization.

2154051023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10824576.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2154051023 is about 46411.7552242964. The cubic root of 2154051023 is about 1291.4729930157.

Adding to 2154051023 its reverse (3201504512), we get a palindrome (5355555535).

The spelling of 2154051023 in words is "two billion, one hundred fifty-four million, fifty-one thousand, twenty-three".