154450554997 has 2 divisors, whose sum is σ = 154450554998. Its totient is φ = 154450554996.

The previous prime is 154450554991. The next prime is 154450555031. The reversal of 154450554997 is 799455054451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116549863236 + 37900691761 = 341394^2 + 194681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154450554997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154450554991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77225277498 + 77225277499.

It is an arithmetic number, because the mean of its divisors is an integer number (77225277499).

Almost surely, 2^154450554997 is an apocalyptic number.

It is an amenable number.

154450554997 is a deficient number, since it is larger than the sum of its proper divisors (1).

154450554997 is an equidigital number, since it uses as much as digits as its factorization.

154450554997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680000, while the sum is 58.

The spelling of 154450554997 in words is "one hundred fifty-four billion, four hundred fifty million, five hundred fifty-four thousand, nine hundred ninety-seven".