51906771 has 32 divisors (see below), whose sum is σ = 88401920. Its totient is φ = 29486592.

The previous prime is 51906707. The next prime is 51906787. The reversal of 51906771 is 17760915.

It is not a de Polignac number, because 51906771 - 2⁶ = 51906707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51906571) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35766 + ... + 37188.

It is an arithmetic number, because the mean of its divisors is an integer number (2762560).

Almost surely, 2^51906771 is an apocalyptic number.

51906771 is a deficient number, since it is larger than the sum of its proper divisors (36495149).

51906771 is a wasteful number, since it uses less digits than its factorization.

51906771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632 (or 1626 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 36.

The square root of 51906771 is about 7204.6353828629. The cubic root of 51906771 is about 373.0279192398.

The spelling of 51906771 in words is "fifty-one million, nine hundred six thousand, seven hundred seventy-one".