51689267 has 12 divisors (see below), whose sum is σ = 60520320. Its totient is φ = 44016336.

The previous prime is 51689249. The next prime is 51689269. The reversal of 51689267 is 76298615.

It is not a de Polignac number, because 51689267 - 2⁶ = 51689203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51689269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4334 + ... + 11052.

It is an arithmetic number, because the mean of its divisors is an integer number (5043360).

Almost surely, 2^51689267 is an apocalyptic number.

51689267 is a deficient number, since it is larger than the sum of its proper divisors (8831053).

51689267 is a wasteful number, since it uses less digits than its factorization.

51689267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890 (or 6883 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 51689267 is about 7189.5248104447. The cubic root of 51689267 is about 372.5061590802.

The spelling of 51689267 in words is "fifty-one million, six hundred eighty-nine thousand, two hundred sixty-seven".