155763161 has 4 divisors (see below), whose sum is σ = 155907024. Its totient is φ = 155619300.

The previous prime is 155763149. The next prime is 155763169. The reversal of 155763161 is 161367551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 155763161 - 2¹⁰ = 155762137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155763169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70295 + ... + 72476.

It is an arithmetic number, because the mean of its divisors is an integer number (38976756).

Almost surely, 2^155763161 is an apocalyptic number.

It is an amenable number.

155763161 is a deficient number, since it is larger than the sum of its proper divisors (143863).

155763161 is a wasteful number, since it uses less digits than its factorization.

155763161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143862.

The product of its digits is 18900, while the sum is 35.

The square root of 155763161 is about 12480.5112475411. The cubic root of 155763161 is about 538.0486970104.

The spelling of 155763161 in words is "one hundred fifty-five million, seven hundred sixty-three thousand, one hundred sixty-one".