155230555 has 8 divisors (see below), whose sum is σ = 188197632. Its totient is φ = 122903808.

The previous prime is 155230549. The next prime is 155230583. The reversal of 155230555 is 555032551.

It is a happy number.

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 155230555 - 2¹⁵ = 155197787 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159547 + ... + 160516.

It is an arithmetic number, because the mean of its divisors is an integer number (23524704).

Almost surely, 2^155230555 is an apocalyptic number.

155230555 is a deficient number, since it is larger than the sum of its proper divisors (32967077).

155230555 is an equidigital number, since it uses as much as digits as its factorization.

155230555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320165.

The product of its (nonzero) digits is 18750, while the sum is 31.

The square root of 155230555 is about 12459.1554689714. The cubic root of 155230555 is about 537.4347409503.

The spelling of 155230555 in words is "one hundred fifty-five million, two hundred thirty thousand, five hundred fifty-five".