155853539 has 2 divisors, whose sum is σ = 155853540. Its totient is φ = 155853538.

The previous prime is 155853527. The next prime is 155853557. The reversal of 155853539 is 935358551.

It is a weak prime.

It is an emirp because it is prime and its reverse (935358551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155853539 - 2⁸ = 155853283 is a prime.

It is a Sophie Germain prime.

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 155853539.

It is not a weakly prime, because it can be changed into another prime (155852539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77926769 + 77926770.

It is an arithmetic number, because the mean of its divisors is an integer number (77926770).

Almost surely, 2^155853539 is an apocalyptic number.

155853539 is a deficient number, since it is larger than the sum of its proper divisors (1).

155853539 is an equidigital number, since it uses as much as digits as its factorization.

155853539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 405000, while the sum is 44.

The square root of 155853539 is about 12484.1314876126. The cubic root of 155853539 is about 538.1527403602.

The spelling of 155853539 in words is "one hundred fifty-five million, eight hundred fifty-three thousand, five hundred thirty-nine".