155411551 has 8 divisors (see below), whose sum is σ = 162040320. Its totient is φ = 148867488.

The previous prime is 155411549. The next prime is 155411573. The reversal of 155411551 is 155114551.

155411551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 155411551 - 2¹ = 155411549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155411351) 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, 17416 + ... + 24781.

It is an arithmetic number, because the mean of its divisors is an integer number (20255040).

Almost surely, 2^155411551 is an apocalyptic number.

155411551 is a deficient number, since it is larger than the sum of its proper divisors (6628769).

155411551 is a wasteful number, since it uses less digits than its factorization.

155411551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42353.

The product of its digits is 2500, while the sum is 28.

The square root of 155411551 is about 12466.4169270886. The cubic root of 155411551 is about 537.6435395262.

The spelling of 155411551 in words is "one hundred fifty-five million, four hundred eleven thousand, five hundred fifty-one".