155330653 has 2 divisors, whose sum is σ = 155330654. Its totient is φ = 155330652.

The previous prime is 155330639. The next prime is 155330671. The reversal of 155330653 is 356033551.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148766809 + 6563844 = 12197^2 + 2562^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155330653 is a prime.

It is a super-2 number, since 2×155330653² = 48255223522812818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155330953) 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, 77665326 + 77665327.

It is an arithmetic number, because the mean of its divisors is an integer number (77665327).

Almost surely, 2^155330653 is an apocalyptic number.

It is an amenable number.

155330653 is a deficient number, since it is larger than the sum of its proper divisors (1).

155330653 is an equidigital number, since it uses as much as digits as its factorization.

155330653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20250, while the sum is 31.

The square root of 155330653 is about 12463.1718675464. The cubic root of 155330653 is about 537.5502349299.

The spelling of 155330653 in words is "one hundred fifty-five million, three hundred thirty thousand, six hundred fifty-three".