155141531 has 2 divisors, whose sum is σ = 155141532. Its totient is φ = 155141530.

The previous prime is 155141527. The next prime is 155141537. The reversal of 155141531 is 135141551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155141531 - 2² = 155141527 is a prime.

It is a super-2 number, since 2×155141531² = 48137789282047922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155141531.

It is not a weakly prime, because it can be changed into another prime (155141537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77570765 + 77570766.

It is an arithmetic number, because the mean of its divisors is an integer number (77570766).

Almost surely, 2^155141531 is an apocalyptic number.

155141531 is a deficient number, since it is larger than the sum of its proper divisors (1).

155141531 is an equidigital number, since it uses as much as digits as its factorization.

155141531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1500, while the sum is 26.

The square root of 155141531 is about 12455.5823227981. The cubic root of 155141531 is about 537.3319825308.

The spelling of 155141531 in words is "one hundred fifty-five million, one hundred forty-one thousand, five hundred thirty-one".