155201513 has 2 divisors, whose sum is σ = 155201514. Its totient is φ = 155201512.

The previous prime is 155201509. The next prime is 155201537. The reversal of 155201513 is 315102551.

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., 132894784 + 22306729 = 11528^2 + 4723^2 .

It is a cyclic number.

It is not a de Polignac number, because 155201513 - 2² = 155201509 is a prime.

It is not a weakly prime, because it can be changed into another prime (155201213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77600756 + 77600757.

It is an arithmetic number, because the mean of its divisors is an integer number (77600757).

Almost surely, 2^155201513 is an apocalyptic number.

It is an amenable number.

155201513 is a deficient number, since it is larger than the sum of its proper divisors (1).

155201513 is an equidigital number, since it uses as much as digits as its factorization.

155201513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 155201513 is about 12457.9899261478. The cubic root of 155201513 is about 537.4012227356.

The spelling of 155201513 in words is "one hundred fifty-five million, two hundred one thousand, five hundred thirteen".