155161455 has 16 divisors (see below), whose sum is σ = 256819680. Its totient is φ = 79899008.

The previous prime is 155161439. The next prime is 155161459. The reversal of 155161455 is 554161551.

It is a cyclic number.

It is not a de Polignac number, because 155161455 - 2⁴ = 155161439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155161459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177912 + ... + 178781.

It is an arithmetic number, because the mean of its divisors is an integer number (16051230).

Almost surely, 2^155161455 is an apocalyptic number.

155161455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155161455 is a deficient number, since it is larger than the sum of its proper divisors (101658225).

155161455 is a wasteful number, since it uses less digits than its factorization.

155161455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356730.

The product of its digits is 15000, while the sum is 33.

The square root of 155161455 is about 12456.3820991490. The cubic root of 155161455 is about 537.3549837737.

The spelling of 155161455 in words is "one hundred fifty-five million, one hundred sixty-one thousand, four hundred fifty-five".