52156385 has 4 divisors (see below), whose sum is σ = 62587668. Its totient is φ = 41725104.

The previous prime is 52156381. The next prime is 52156397. The reversal of 52156385 is 58365125.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12931216 + 39225169 = 3596^2 + 6263^2 .

It is a cyclic number.

It is not a de Polignac number, because 52156385 - 2² = 52156381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52156381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5215634 + ... + 5215643.

It is an arithmetic number, because the mean of its divisors is an integer number (15646917).

Almost surely, 2^52156385 is an apocalyptic number.

It is an amenable number.

52156385 is a deficient number, since it is larger than the sum of its proper divisors (10431283).

52156385 is a wasteful number, since it uses less digits than its factorization.

52156385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10431282.

The product of its digits is 36000, while the sum is 35.

The square root of 52156385 is about 7221.9377593552. The cubic root of 52156385 is about 373.6249134917.

The spelling of 52156385 in words is "fifty-two million, one hundred fifty-six thousand, three hundred eighty-five".