55603031 has 4 divisors (see below), whose sum is σ = 60657864. Its totient is φ = 50548200.

The previous prime is 55603027. The next prime is 55603033. The reversal of 55603031 is 13030655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55603031 - 2² = 55603027 is a prime.

It is a super-2 number, since 2×55603031² = 6183394112773922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55602988 and 55603006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55603033) 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, 2527400 + ... + 2527421.

It is an arithmetic number, because the mean of its divisors is an integer number (15164466).

Almost surely, 2^55603031 is an apocalyptic number.

55603031 is a deficient number, since it is larger than the sum of its proper divisors (5054833).

55603031 is a wasteful number, since it uses less digits than its factorization.

55603031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5054832.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 55603031 is about 7456.7439945327. The cubic root of 55603031 is about 381.6800748729.

Adding to 55603031 its reverse (13030655), we get a palindrome (68633686).

The spelling of 55603031 in words is "fifty-five million, six hundred three thousand, thirty-one".