55691769 has 8 divisors (see below), whose sum is σ = 84863680. Its totient is φ = 31823856.

The previous prime is 55691759. The next prime is 55691789. The reversal of 55691769 is 96719655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55691769 - 2⁵ = 55691737 is a prime.

It is a super-2 number, since 2×55691769² = 6203146268698722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55691729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1325974 + ... + 1326015.

It is an arithmetic number, because the mean of its divisors is an integer number (10607960).

Almost surely, 2^55691769 is an apocalyptic number.

It is an amenable number.

55691769 is a deficient number, since it is larger than the sum of its proper divisors (29171911).

55691769 is a wasteful number, since it uses less digits than its factorization.

55691769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2651999.

The product of its digits is 510300, while the sum is 48.

The square root of 55691769 is about 7462.6918065803. The cubic root of 55691769 is about 381.8830106011.

The spelling of 55691769 in words is "fifty-five million, six hundred ninety-one thousand, seven hundred sixty-nine".