52861905 has 12 divisors (see below), whose sum is σ = 91627380. Its totient is φ = 28192992.

The previous prime is 52861903. The next prime is 52861909. The reversal of 52861905 is 50916825.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8346321 + 44515584 = 2889^2 + 6672^2 .

It is not a de Polignac number, because 52861905 - 2¹ = 52861903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52861905.

It is not an unprimeable number, because it can be changed into a prime (52861901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 587310 + ... + 587399.

It is an arithmetic number, because the mean of its divisors is an integer number (7635615).

Almost surely, 2^52861905 is an apocalyptic number.

It is an amenable number.

52861905 is a deficient number, since it is larger than the sum of its proper divisors (38765475).

52861905 is a wasteful number, since it uses less digits than its factorization.

52861905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174720 (or 1174717 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 52861905 is about 7270.6192996195. The cubic root of 52861905 is about 375.3020499768.

The spelling of 52861905 in words is "fifty-two million, eight hundred sixty-one thousand, nine hundred five".