55303081 has 8 divisors (see below), whose sum is σ = 56246400. Its totient is φ = 54366000.

The previous prime is 55303043. The next prime is 55303097. The reversal of 55303081 is 18030355.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55303081 is a prime.

It is a super-2 number, since 2×55303081² = 6116861536185122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55303181) 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, 18435 + ... + 21223.

It is an arithmetic number, because the mean of its divisors is an integer number (7030800).

Almost surely, 2^55303081 is an apocalyptic number.

It is an amenable number.

55303081 is a deficient number, since it is larger than the sum of its proper divisors (943319).

55303081 is a wasteful number, since it uses less digits than its factorization.

55303081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3119.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 55303081 is about 7436.6041309189. The cubic root of 55303081 is about 380.9925139120.

The spelling of 55303081 in words is "fifty-five million, three hundred three thousand, eighty-one".