155310097 has 2 divisors, whose sum is σ = 155310098. Its totient is φ = 155310096.

The previous prime is 155310061. The next prime is 155310131. The reversal of 155310097 is 790013551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147889921 + 7420176 = 12161^2 + 2724^2 .

It is an emirp because it is prime and its reverse (790013551) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155310097 is a prime.

It is equal to p_8726026 and since 155310097 and 8726026 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (155314097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77655048 + 77655049.

It is an arithmetic number, because the mean of its divisors is an integer number (77655049).

Almost surely, 2^155310097 is an apocalyptic number.

It is an amenable number.

155310097 is a deficient number, since it is larger than the sum of its proper divisors (1).

155310097 is an equidigital number, since it uses as much as digits as its factorization.

155310097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 155310097 is about 12462.3471705775. The cubic root of 155310097 is about 537.5265212802.

The spelling of 155310097 in words is "one hundred fifty-five million, three hundred ten thousand, ninety-seven".