55808137 has 8 divisors (see below), whose sum is σ = 69579072. Its totient is φ = 43486800.

The previous prime is 55808131. The next prime is 55808141. The reversal of 55808137 is 73180855.

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

It is not a de Polignac number, because 55808137 - 2⁷ = 55808009 is a prime.

It is a super-2 number, since 2×55808137² = 6229096310821538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55808096 and 55808105.

It is not an unprimeable number, because it can be changed into a prime (55808131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362314 + ... + 362467.

It is an arithmetic number, because the mean of its divisors is an integer number (8697384).

Almost surely, 2^55808137 is an apocalyptic number.

It is an amenable number.

55808137 is a deficient number, since it is larger than the sum of its proper divisors (13770935).

55808137 is a wasteful number, since it uses less digits than its factorization.

55808137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724799.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 55808137 is about 7470.4843885788. The cubic root of 55808137 is about 382.1488071877.

It can be divided in two parts, 55808 and 137, that added together give a triangular number (55945 = T₃₃₄).

The spelling of 55808137 in words is "fifty-five million, eight hundred eight thousand, one hundred thirty-seven".