2154230277 has 4 divisors (see below), whose sum is σ = 2872307040. Its totient is φ = 1436153516.

The previous prime is 2154230257. The next prime is 2154230303. The reversal of 2154230277 is 7720324512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2154230277 - 2⁷ = 2154230149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154230237) 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, 359038377 + ... + 359038382.

It is an arithmetic number, because the mean of its divisors is an integer number (718076760).

Almost surely, 2^2154230277 is an apocalyptic number.

It is an amenable number.

2154230277 is a deficient number, since it is larger than the sum of its proper divisors (718076763).

2154230277 is an equidigital number, since it uses as much as digits as its factorization.

2154230277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718076762.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 2154230277 is about 46413.6863112595. The cubic root of 2154230277 is about 1291.5088162586.

Adding to 2154230277 its reverse (7720324512), we get a palindrome (9874554789).

The spelling of 2154230277 in words is "two billion, one hundred fifty-four million, two hundred thirty thousand, two hundred seventy-seven".