55323621109 has 4 divisors (see below), whose sum is σ = 57108254080. Its totient is φ = 53538988140.

The previous prime is 55323621103. The next prime is 55323621139. The reversal of 55323621109 is 90112632355.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55323621109 - 2¹³ = 55323612917 is a prime.

It is a super-2 number, since 2×55323621109² (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 (55323621103) 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, 892316439 + ... + 892316500.

It is an arithmetic number, because the mean of its divisors is an integer number (14277063520).

Almost surely, 2^55323621109 is an apocalyptic number.

It is an amenable number.

55323621109 is a deficient number, since it is larger than the sum of its proper divisors (1784632971).

55323621109 is a wasteful number, since it uses less digits than its factorization.

55323621109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784632970.

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 55323621109 in words is "fifty-five billion, three hundred twenty-three million, six hundred twenty-one thousand, one hundred nine".