154054531049 has 2 divisors, whose sum is σ = 154054531050. Its totient is φ = 154054531048.

The previous prime is 154054530991. The next prime is 154054531051. The reversal of 154054531049 is 940135450451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146502921049 + 7551610000 = 382757^2 + 86900^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154054531049 is a prime.

It is a Sophie Germain prime.

Together with 154054531051, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 154054530997 and 154054531015.

It is not a weakly prime, because it can be changed into another prime (154054531079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77027265524 + 77027265525.

It is an arithmetic number, because the mean of its divisors is an integer number (77027265525).

Almost surely, 2^154054531049 is an apocalyptic number.

It is an amenable number.

154054531049 is a deficient number, since it is larger than the sum of its proper divisors (1).

154054531049 is an equidigital number, since it uses as much as digits as its factorization.

154054531049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216000, while the sum is 41.

It can be divided in two parts, 15405 and 4531049, that added together give a palindrome (4546454).

The spelling of 154054531049 in words is "one hundred fifty-four billion, fifty-four million, five hundred thirty-one thousand, forty-nine".