155231355 has 8 divisors (see below), whose sum is σ = 248370192. Its totient is φ = 82790048.

The previous prime is 155231327. The next prime is 155231407. The reversal of 155231355 is 553132551.

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 155231355 - 2⁷ = 155231227 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5174364 + ... + 5174393.

It is an arithmetic number, because the mean of its divisors is an integer number (31046274).

Almost surely, 2^155231355 is an apocalyptic number.

155231355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155231355 is a deficient number, since it is larger than the sum of its proper divisors (93138837).

155231355 is a wasteful number, since it uses less digits than its factorization.

155231355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10348765.

The product of its digits is 11250, while the sum is 30.

The square root of 155231355 is about 12459.1875738348. The cubic root of 155231355 is about 537.4356641944.

The spelling of 155231355 in words is "one hundred fifty-five million, two hundred thirty-one thousand, three hundred fifty-five".