155065431 has 8 divisors (see below), whose sum is σ = 207501424. Its totient is φ = 103003200.

The previous prime is 155065423. The next prime is 155065433. The reversal of 155065431 is 134560551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155065431 - 2³ = 155065423 is a prime.

It is a super-2 number, since 2×155065431² = 48090575782431522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155065433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92470 + ... + 94131.

It is an arithmetic number, because the mean of its divisors is an integer number (25937678).

Almost surely, 2^155065431 is an apocalyptic number.

155065431 is a deficient number, since it is larger than the sum of its proper divisors (52435993).

155065431 is a wasteful number, since it uses less digits than its factorization.

155065431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186881.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 155065431 is about 12452.5270929237. The cubic root of 155065431 is about 537.2441108277.

The spelling of 155065431 in words is "one hundred fifty-five million, sixty-five thousand, four hundred thirty-one".