55807733 has 4 divisors (see below), whose sum is σ = 56514240. Its totient is φ = 55101228.

The previous prime is 55807711. The next prime is 55807747. The reversal of 55807733 is 33770855.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33770855 = 5 ⋅6754171.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55807733 is a prime.

It is a super-2 number, since 2×55807733² = 6229006125198578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55807783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353135 + ... + 353292.

It is an arithmetic number, because the mean of its divisors is an integer number (14128560).

Almost surely, 2^55807733 is an apocalyptic number.

It is an amenable number.

55807733 is a deficient number, since it is larger than the sum of its proper divisors (706507).

55807733 is an equidigital number, since it uses as much as digits as its factorization.

55807733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706506.

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 55807733 is about 7470.4573487839. The cubic root of 55807733 is about 382.1478850492.

The spelling of 55807733 in words is "fifty-five million, eight hundred seven thousand, seven hundred thirty-three".