155240555 has 8 divisors (see below), whose sum is σ = 190832544. Its totient is φ = 121163200.

The previous prime is 155240537. The next prime is 155240557. The reversal of 155240555 is 555042551.

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

It is not a de Polignac number, because 155240555 - 2¹⁶ = 155175019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155240557) by changing a digit.

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, 378431 + ... + 378840.

It is an arithmetic number, because the mean of its divisors is an integer number (23854068).

Almost surely, 2^155240555 is an apocalyptic number.

155240555 is a deficient number, since it is larger than the sum of its proper divisors (35591989).

155240555 is an equidigital number, since it uses as much as digits as its factorization.

155240555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757317.

The product of its (nonzero) digits is 25000, while the sum is 32.

The square root of 155240555 is about 12459.5567738182. The cubic root of 155240555 is about 537.4462812729.

The spelling of 155240555 in words is "one hundred fifty-five million, two hundred forty thousand, five hundred fifty-five".