505070155 has 4 divisors (see below), whose sum is σ = 606084192. Its totient is φ = 404056120.

The previous prime is 505070129. The next prime is 505070191. The reversal of 505070155 is 551070505.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 505070155 - 2⁵ = 505070123 is a prime.

It is a super-2 number, since 2×505070155² = 510191722943448050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50507011 + ... + 50507020.

It is an arithmetic number, because the mean of its divisors is an integer number (151521048).

Almost surely, 2^505070155 is an apocalyptic number.

505070155 is a deficient number, since it is larger than the sum of its proper divisors (101014037).

505070155 is a wasteful number, since it uses less digits than its factorization.

505070155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101014036.

The product of its (nonzero) digits is 4375, while the sum is 28.

The square root of 505070155 is about 22473.7659282996. The cubic root of 505070155 is about 796.3742984134.

The spelling of 505070155 in words is "five hundred five million, seventy thousand, one hundred fifty-five".