2154530051 has 2 divisors, whose sum is σ = 2154530052. Its totient is φ = 2154530050.

The previous prime is 2154530047. The next prime is 2154530141. The reversal of 2154530051 is 1500354512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2154530051 - 2² = 2154530047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2154530051.

It is not a weakly prime, because it can be changed into another prime (2154536051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077265025 + 1077265026.

It is an arithmetic number, because the mean of its divisors is an integer number (1077265026).

Almost surely, 2^2154530051 is an apocalyptic number.

2154530051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154530051 is an equidigital number, since it uses as much as digits as its factorization.

2154530051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2154530051 is about 46416.9155696498. The cubic root of 2154530051 is about 1291.5687205332.

Adding to 2154530051 its reverse (1500354512), we get a palindrome (3654884563).

The spelling of 2154530051 in words is "two billion, one hundred fifty-four million, five hundred thirty thousand, fifty-one".