52081901 has 4 divisors (see below), whose sum is σ = 53293152. Its totient is φ = 50870652.

The previous prime is 52081889. The next prime is 52081921. The reversal of 52081901 is 10918025.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52081901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52081921) 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, 605561 + ... + 605646.

It is an arithmetic number, because the mean of its divisors is an integer number (13323288).

Almost surely, 2^52081901 is an apocalyptic number.

It is an amenable number.

52081901 is a deficient number, since it is larger than the sum of its proper divisors (1211251).

52081901 is a wasteful number, since it uses less digits than its factorization.

52081901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211250.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 52081901 is about 7216.7791292238. The cubic root of 52081901 is about 373.4469721202.

Adding to 52081901 its reverse (10918025), we get a palindrome (62999926).

The spelling of 52081901 in words is "fifty-two million, eighty-one thousand, nine hundred one".