51858969 has 4 divisors (see below), whose sum is σ = 69145296. Its totient is φ = 34572644.

The previous prime is 51858953. The next prime is 51858979. The reversal of 51858969 is 96985815.

51858969 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.

It is a cyclic number.

It is not a de Polignac number, because 51858969 - 2⁴ = 51858953 is a prime.

It is a super-2 number, since 2×51858969² = 5378705331485922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51858979) 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, 8643159 + ... + 8643164.

It is an arithmetic number, because the mean of its divisors is an integer number (17286324).

Almost surely, 2^51858969 is an apocalyptic number.

It is an amenable number.

51858969 is a deficient number, since it is larger than the sum of its proper divisors (17286327).

51858969 is a wasteful number, since it uses less digits than its factorization.

51858969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17286326.

The product of its digits is 777600, while the sum is 51.

The square root of 51858969 is about 7201.3171711847. The cubic root of 51858969 is about 372.9133744072.

The spelling of 51858969 in words is "fifty-one million, eight hundred fifty-eight thousand, nine hundred sixty-nine".