52787155 has 4 divisors (see below), whose sum is σ = 63344592. Its totient is φ = 42229720.

The previous prime is 52787129. The next prime is 52787167. The reversal of 52787155 is 55178725.

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

It is not a de Polignac number, because 52787155 - 2¹³ = 52778963 is a prime.

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, 5278711 + ... + 5278720.

It is an arithmetic number, because the mean of its divisors is an integer number (15836148).

Almost surely, 2^52787155 is an apocalyptic number.

52787155 is a deficient number, since it is larger than the sum of its proper divisors (10557437).

52787155 is a wasteful number, since it uses less digits than its factorization.

52787155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10557436.

The product of its digits is 98000, while the sum is 40.

The square root of 52787155 is about 7265.4769285987. The cubic root of 52787155 is about 375.1250664325.

The spelling of 52787155 in words is "fifty-two million, seven hundred eighty-seven thousand, one hundred fifty-five".