155523030461 has 2 divisors, whose sum is σ = 155523030462. Its totient is φ = 155523030460.

The previous prime is 155523030449. The next prime is 155523030463. The reversal of 155523030461 is 164030325551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131685523225 + 23837507236 = 362885^2 + 154394^2 .

It is a cyclic number.

It is not a de Polignac number, because 155523030461 - 2³⁴ = 138343161277 is a prime.

Together with 155523030463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155523030463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77761515230 + 77761515231.

It is an arithmetic number, because the mean of its divisors is an integer number (77761515231).

Almost surely, 2^155523030461 is an apocalyptic number.

It is an amenable number.

155523030461 is a deficient number, since it is larger than the sum of its proper divisors (1).

155523030461 is an equidigital number, since it uses as much as digits as its factorization.

155523030461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 155523030461 in words is "one hundred fifty-five billion, five hundred twenty-three million, thirty thousand, four hundred sixty-one".