155260631 has 2 divisors, whose sum is σ = 155260632. Its totient is φ = 155260630.

The previous prime is 155260627. The next prime is 155260657. The reversal of 155260631 is 136062551.

It is a weak prime.

It is an emirp because it is prime and its reverse (136062551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155260631 - 2² = 155260627 is a prime.

It is a super-2 number, since 2×155260631² = 48211727077036322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 155260594 and 155260603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155260601) 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, 77630315 + 77630316.

It is an arithmetic number, because the mean of its divisors is an integer number (77630316).

Almost surely, 2^155260631 is an apocalyptic number.

155260631 is a deficient number, since it is larger than the sum of its proper divisors (1).

155260631 is an equidigital number, since it uses as much as digits as its factorization.

155260631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 155260631 is about 12460.3623944089. The cubic root of 155260631 is about 537.4694481282.

The spelling of 155260631 in words is "one hundred fifty-five million, two hundred sixty thousand, six hundred thirty-one".