155333081 has 2 divisors, whose sum is σ = 155333082. Its totient is φ = 155333080.

The previous prime is 155333069. The next prime is 155333093. The reversal of 155333081 is 180333551.

It is a balanced prime because it is at equal distance from previous prime (155333069) and next prime (155333093).

It can be written as a sum of positive squares in only one way, i.e., 147015625 + 8317456 = 12125^2 + 2884^2 .

It is an emirp because it is prime and its reverse (180333551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155333081 - 2¹⁰ = 155332057 is a prime.

It is a super-2 number, since 2×155333081² = 48256732105905122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (155333011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77666540 + 77666541.

It is an arithmetic number, because the mean of its divisors is an integer number (77666541).

Almost surely, 2^155333081 is an apocalyptic number.

It is an amenable number.

155333081 is a deficient number, since it is larger than the sum of its proper divisors (1).

155333081 is an equidigital number, since it uses as much as digits as its factorization.

155333081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 155333081 is about 12463.2692741511. The cubic root of 155333081 is about 537.5530357619.

The spelling of 155333081 in words is "one hundred fifty-five million, three hundred thirty-three thousand, eighty-one".