155060513 has 4 divisors (see below), whose sum is σ = 155556228. Its totient is φ = 154564800.

The previous prime is 155060497. The next prime is 155060527. The reversal of 155060513 is 315060551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315060551 = 13 ⋅24235427.

It can be written as a sum of positive squares in 2 ways, for example, as 10387729 + 144672784 = 3223^2 + 12028^2 .

It is a cyclic number.

It is not a de Polignac number, because 155060513 - 2⁴ = 155060497 is a prime.

It is a super-3 number, since 3×155060513³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155060413) 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 in 3 ways as a sum of consecutive naturals, for example, 247388 + ... + 248013.

It is an arithmetic number, because the mean of its divisors is an integer number (38889057).

Almost surely, 2^155060513 is an apocalyptic number.

It is an amenable number.

155060513 is a deficient number, since it is larger than the sum of its proper divisors (495715).

155060513 is an equidigital number, since it uses as much as digits as its factorization.

155060513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495714.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 155060513 is about 12452.3296214002. The cubic root of 155060513 is about 537.2384310867.

The spelling of 155060513 in words is "one hundred fifty-five million, sixty thousand, five hundred thirteen".