51766091 has 16 divisors (see below), whose sum is σ = 56881440. Its totient is φ = 46824960.

The previous prime is 51766081. The next prime is 51766103. The reversal of 51766091 is 19066715.

It is not a de Polignac number, because 51766091 - 2¹⁰ = 51765067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51766061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192305 + ... + 192573.

It is an arithmetic number, because the mean of its divisors is an integer number (3555090).

Almost surely, 2^51766091 is an apocalyptic number.

51766091 is a deficient number, since it is larger than the sum of its proper divisors (5115349).

51766091 is a wasteful number, since it uses less digits than its factorization.

51766091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 51766091 is about 7194.8655998566. The cubic root of 51766091 is about 372.6906154727.

The spelling of 51766091 in words is "fifty-one million, seven hundred sixty-six thousand, ninety-one".