55563351031 has 4 divisors (see below), whose sum is σ = 55563961864. Its totient is φ = 55562740200.

The previous prime is 55563351029. The next prime is 55563351047. The reversal of 55563351031 is 13015336555.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55563351031 - 2¹ = 55563351029 is a prime.

It is a super-2 number, since 2×55563351031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55563351001) 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, 138600 + ... + 361021.

It is an arithmetic number, because the mean of its divisors is an integer number (13890990466).

Almost surely, 2^55563351031 is an apocalyptic number.

55563351031 is a deficient number, since it is larger than the sum of its proper divisors (610833).

55563351031 is a wasteful number, since it uses less digits than its factorization.

55563351031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610832.

The product of its (nonzero) digits is 101250, while the sum is 37.

Adding to 55563351031 its reverse (13015336555), we get a palindrome (68578687586).

The spelling of 55563351031 in words is "fifty-five billion, five hundred sixty-three million, three hundred fifty-one thousand, thirty-one".