51881659 has 16 divisors (see below), whose sum is σ = 54885376. Its totient is φ = 48988800.

The previous prime is 51881657. The next prime is 51881663. The reversal of 51881659 is 95618815.

It is a cyclic number.

It is not a de Polignac number, because 51881659 - 2¹ = 51881657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51881653) 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, 286549 + ... + 286729.

It is an arithmetic number, because the mean of its divisors is an integer number (3430336).

Almost surely, 2^51881659 is an apocalyptic number.

51881659 is a deficient number, since it is larger than the sum of its proper divisors (3003717).

51881659 is a wasteful number, since it uses less digits than its factorization.

51881659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406.

The product of its digits is 86400, while the sum is 43.

The square root of 51881659 is about 7202.8924051384. The cubic root of 51881659 is about 372.9677537548.

The spelling of 51881659 in words is "fifty-one million, eight hundred eighty-one thousand, six hundred fifty-nine".