55312003 has 8 divisors (see below), whose sum is σ = 56904848. Its totient is φ = 53724384.

The previous prime is 55311989. The next prime is 55312007. The reversal of 55312003 is 30021355.

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

It is a cyclic number.

It is not a de Polignac number, because 55312003 - 2⁹ = 55311491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55312007) 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, 31825 + ... + 33517.

It is an arithmetic number, because the mean of its divisors is an integer number (7113106).

Almost surely, 2^55312003 is an apocalyptic number.

55312003 is a deficient number, since it is larger than the sum of its proper divisors (1592845).

55312003 is a wasteful number, since it uses less digits than its factorization.

55312003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 55312003 is about 7437.2039773022. The cubic root of 55312003 is about 381.0130012120.

Adding to 55312003 its reverse (30021355), we get a palindrome (85333358).

The spelling of 55312003 in words is "fifty-five million, three hundred twelve thousand, three".