52170761 has 4 divisors (see below), whose sum is σ = 52198932. Its totient is φ = 52142592.

The previous prime is 52170757. The next prime is 52170763. The reversal of 52170761 is 16707125.

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 45306361 + 6864400 = 6731^2 + 2620^2 .

It is a cyclic number.

It is not a de Polignac number, because 52170761 - 2² = 52170757 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52170763) 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, 11096 + ... + 15081.

It is an arithmetic number, because the mean of its divisors is an integer number (13049733).

Almost surely, 2^52170761 is an apocalyptic number.

It is an amenable number.

52170761 is a deficient number, since it is larger than the sum of its proper divisors (28171).

52170761 is a wasteful number, since it uses less digits than its factorization.

52170761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28170.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 52170761 is about 7222.9329915208. The cubic root of 52170761 is about 373.6592380737.

Adding to 52170761 its reverse (16707125), we get a palindrome (68877886).

The spelling of 52170761 in words is "fifty-two million, one hundred seventy thousand, seven hundred sixty-one".