55808691 has 8 divisors (see below), whose sum is σ = 76422864. Its totient is φ = 36200160.

The previous prime is 55808677. The next prime is 55808699. The reversal of 55808691 is 19680855.

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

It is not a de Polignac number, because 55808691 - 2¹³ = 55800499 is a prime.

It is a super-2 number, since 2×55808691² = 6229219982266962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55808699) 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, 251280 + ... + 251501.

It is an arithmetic number, because the mean of its divisors is an integer number (9552858).

Almost surely, 2^55808691 is an apocalyptic number.

55808691 is a deficient number, since it is larger than the sum of its proper divisors (20614173).

55808691 is a wasteful number, since it uses less digits than its factorization.

55808691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502821.

The product of its (nonzero) digits is 86400, while the sum is 42.

The square root of 55808691 is about 7470.5214677424. The cubic root of 55808691 is about 382.1500716971.

The spelling of 55808691 in words is "fifty-five million, eight hundred eight thousand, six hundred ninety-one".