52751261 has 8 divisors (see below), whose sum is σ = 54735480. Its totient is φ = 50778112.

The previous prime is 52751227. The next prime is 52751263. The reversal of 52751261 is 16215725.

It can be written as a sum of positive squares in 4 ways, for example, as 8940100 + 43811161 = 2990^2 + 6619^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52751261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52751263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7661 + ... + 12813.

It is an arithmetic number, because the mean of its divisors is an integer number (6841935).

Almost surely, 2^52751261 is an apocalyptic number.

It is an amenable number.

52751261 is a deficient number, since it is larger than the sum of its proper divisors (1984219).

52751261 is a wasteful number, since it uses less digits than its factorization.

52751261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5535.

The product of its digits is 4200, while the sum is 29.

The square root of 52751261 is about 7263.0063334683. The cubic root of 52751261 is about 375.0400218026.

Adding to 52751261 its reverse (16215725), we get a palindrome (68966986).

The spelling of 52751261 in words is "fifty-two million, seven hundred fifty-one thousand, two hundred sixty-one".