51033869 has 4 divisors (see below), whose sum is σ = 52119744. Its totient is φ = 49947996.

The previous prime is 51033839. The next prime is 51033883. The reversal of 51033869 is 96833015.

51033869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 96833015 = 5 ⋅19366603.

It is a cyclic number.

It is not a de Polignac number, because 51033869 - 2⁸ = 51033613 is a prime.

It is a super-2 number, since 2×51033869² = 5208911570218322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51033809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542867 + ... + 542960.

It is an arithmetic number, because the mean of its divisors is an integer number (13029936).

Almost surely, 2^51033869 is an apocalyptic number.

It is an amenable number.

51033869 is a deficient number, since it is larger than the sum of its proper divisors (1085875).

51033869 is a wasteful number, since it uses less digits than its factorization.

51033869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085874.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 51033869 is about 7143.7993392872. The cubic root of 51033869 is about 370.9250507922.

The spelling of 51033869 in words is "fifty-one million, thirty-three thousand, eight hundred sixty-nine".