55331303 has 2 divisors, whose sum is σ = 55331304. Its totient is φ = 55331302.

The previous prime is 55331293. The next prime is 55331327. The reversal of 55331303 is 30313355.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55331303 is a prime.

It is equal to p_3300827 and since 55331303 and 3300827 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55331503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27665651 + 27665652.

It is an arithmetic number, because the mean of its divisors is an integer number (27665652).

Almost surely, 2^55331303 is an apocalyptic number.

55331303 is a deficient number, since it is larger than the sum of its proper divisors (1).

55331303 is an equidigital number, since it uses as much as digits as its factorization.

55331303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2025, while the sum is 23.

The square root of 55331303 is about 7438.5013947703. The cubic root of 55331303 is about 381.0573116413.

Adding to 55331303 its reverse (30313355), we get a palindrome (85644658).

The spelling of 55331303 in words is "fifty-five million, three hundred thirty-one thousand, three hundred three".