155234461 has 2 divisors, whose sum is σ = 155234462. Its totient is φ = 155234460.

The previous prime is 155234437. The next prime is 155234473. The reversal of 155234461 is 164432551.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129163225 + 26071236 = 11365^2 + 5106^2 .

It is a cyclic number.

It is not a de Polignac number, because 155234461 - 2⁷ = 155234333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155234411) 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, 77617230 + 77617231.

It is an arithmetic number, because the mean of its divisors is an integer number (77617231).

Almost surely, 2^155234461 is an apocalyptic number.

It is an amenable number.

155234461 is a deficient number, since it is larger than the sum of its proper divisors (1).

155234461 is an equidigital number, since it uses as much as digits as its factorization.

155234461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 31.

The square root of 155234461 is about 12459.3122201829. The cubic root of 155234461 is about 537.4392486593.

The spelling of 155234461 in words is "one hundred fifty-five million, two hundred thirty-four thousand, four hundred sixty-one".