155338755 has 64 divisors (see below), whose sum is σ = 294658560. Its totient is φ = 68889600.

The previous prime is 155338753. The next prime is 155338789. The reversal of 155338755 is 557833551.

It is not a de Polignac number, because 155338755 - 2¹ = 155338753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155338751) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 297895 + ... + 298415.

It is an arithmetic number, because the mean of its divisors is an integer number (4604040).

Almost surely, 2^155338755 is an apocalyptic number.

155338755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155338755 is a deficient number, since it is larger than the sum of its proper divisors (139319805).

155338755 is a wasteful number, since it uses less digits than its factorization.

155338755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692.

The product of its digits is 315000, while the sum is 42.

The square root of 155338755 is about 12463.4969009504. The cubic root of 155338755 is about 537.5595809201.

The spelling of 155338755 in words is "one hundred fifty-five million, three hundred thirty-eight thousand, seven hundred fifty-five".