51752109 has 16 divisors (see below), whose sum is σ = 70244352. Its totient is φ = 33884928.

The previous prime is 51752101. The next prime is 51752147. The reversal of 51752109 is 90125715.

It is not a de Polignac number, because 51752109 - 2³ = 51752101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51752101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83569 + ... + 84185.

It is an arithmetic number, because the mean of its divisors is an integer number (4390272).

Almost surely, 2^51752109 is an apocalyptic number.

It is an amenable number.

51752109 is a deficient number, since it is larger than the sum of its proper divisors (18492243).

51752109 is a wasteful number, since it uses less digits than its factorization.

51752109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 51752109 is about 7193.8938691087. The cubic root of 51752109 is about 372.6570579236.

The spelling of 51752109 in words is "fifty-one million, seven hundred fifty-two thousand, one hundred nine".