155262361 has 2 divisors, whose sum is σ = 155262362. Its totient is φ = 155262360.

The previous prime is 155262329. The next prime is 155262421. The reversal of 155262361 is 163262551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121110025 + 34152336 = 11005^2 + 5844^2 .

It is a cyclic number.

It is not a de Polignac number, because 155262361 - 2⁵ = 155262329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (155262301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77631180 + 77631181.

It is an arithmetic number, because the mean of its divisors is an integer number (77631181).

Almost surely, 2^155262361 is an apocalyptic number.

It is an amenable number.

155262361 is a deficient number, since it is larger than the sum of its proper divisors (1).

155262361 is an equidigital number, since it uses as much as digits as its factorization.

155262361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 31.

The square root of 155262361 is about 12460.4318143474. The cubic root of 155262361 is about 537.4714443816.

The spelling of 155262361 in words is "one hundred fifty-five million, two hundred sixty-two thousand, three hundred sixty-one".