155152531 has 2 divisors, whose sum is σ = 155152532. Its totient is φ = 155152530.

The previous prime is 155152511. The next prime is 155152559. The reversal of 155152531 is 135251551.

It is an a-pointer prime, because the next prime (155152559) can be obtained adding 155152531 to its sum of digits (28).

It is a weak prime.

It is an emirp because it is prime and its reverse (135251551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155152531 - 2¹⁵ = 155119763 is a prime.

It is a super-2 number, since 2×155152531² = 48144615751411922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155152531.

It is not a weakly prime, because it can be changed into another prime (155152511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77576265 + 77576266.

It is an arithmetic number, because the mean of its divisors is an integer number (77576266).

Almost surely, 2^155152531 is an apocalyptic number.

155152531 is a deficient number, since it is larger than the sum of its proper divisors (1).

155152531 is an equidigital number, since it uses as much as digits as its factorization.

155152531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3750, while the sum is 28.

The square root of 155152531 is about 12456.0238840490. The cubic root of 155152531 is about 537.3446817138.

The spelling of 155152531 in words is "one hundred fifty-five million, one hundred fifty-two thousand, five hundred thirty-one".