2154551023 has 2 divisors, whose sum is σ = 2154551024. Its totient is φ = 2154551022.

The previous prime is 2154551011. The next prime is 2154551039. The reversal of 2154551023 is 3201554512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2154551023 - 2⁹ = 2154550511 is a prime.

It is a super-2 number, since 2×2154551023² = 9284180221420693058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2154550982 and 2154551000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2154551923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077275511 + 1077275512.

It is an arithmetic number, because the mean of its divisors is an integer number (1077275512).

Almost surely, 2^2154551023 is an apocalyptic number.

2154551023 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154551023 is an equidigital number, since it uses as much as digits as its factorization.

2154551023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 2154551023 is about 46417.1414781221. The cubic root of 2154551023 is about 1291.5729111905.

The spelling of 2154551023 in words is "two billion, one hundred fifty-four million, five hundred fifty-one thousand, twenty-three".