51752969 has 4 divisors (see below), whose sum is σ = 52854144. Its totient is φ = 50651796.

The previous prime is 51752957. The next prime is 51753007. The reversal of 51752969 is 96925715.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96925715 = 5 ⋅19385143.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51752969 is a prime.

It is a super-2 number, since 2×51752969² = 5356739600629922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51752929) 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, 550517 + ... + 550610.

It is an arithmetic number, because the mean of its divisors is an integer number (13213536).

Almost surely, 2^51752969 is an apocalyptic number.

It is an amenable number.

51752969 is a deficient number, since it is larger than the sum of its proper divisors (1101175).

51752969 is a wasteful number, since it uses less digits than its factorization.

51752969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101174.

The product of its digits is 170100, while the sum is 44.

The square root of 51752969 is about 7193.9536417745. The cubic root of 51752969 is about 372.6591221441.

The spelling of 51752969 in words is "fifty-one million, seven hundred fifty-two thousand, nine hundred sixty-nine".