155461 has 2 divisors, whose sum is σ = 155462. Its totient is φ = 155460.

The previous prime is 155453. The next prime is 155473. The reversal of 155461 is 164551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155236 + 225 = 394^2 + 15^2 .

It is a cyclic number.

It is not a de Polignac number, because 155461 - 2³ = 155453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77730 + 77731.

It is an arithmetic number, because the mean of its divisors is an integer number (77731).

2¹⁵⁵⁴⁶¹ is an apocalyptic number.

It is an amenable number.

155461 is a deficient number, since it is larger than the sum of its proper divisors (1).

155461 is an equidigital number, since it uses as much as digits as its factorization.

155461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 600, while the sum is 22.

The square root of 155461 is about 394.2854296065. The cubic root of 155461 is about 53.7700556129.

It can be divided in two parts, 155 and 461, that added together give a palindrome (616).

The spelling of 155461 in words is "one hundred fifty-five thousand, four hundred sixty-one".