55061803 has 2 divisors, whose sum is σ = 55061804. Its totient is φ = 55061802.

The previous prime is 55061779. The next prime is 55061819. The reversal of 55061803 is 30816055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55061803 - 2⁵ = 55061771 is a prime.

It is a super-2 number, since 2×55061803² = 6063604299221618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55061603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27530901 + 27530902.

It is an arithmetic number, because the mean of its divisors is an integer number (27530902).

Almost surely, 2^55061803 is an apocalyptic number.

55061803 is a deficient number, since it is larger than the sum of its proper divisors (1).

55061803 is an equidigital number, since it uses as much as digits as its factorization.

55061803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 55061803 is about 7420.3640746260. The cubic root of 55061803 is about 380.4376375251.

Adding to 55061803 its reverse (30816055), we get a palindrome (85877858).

The spelling of 55061803 in words is "fifty-five million, sixty-one thousand, eight hundred three".