55222565531 has 4 divisors (see below), whose sum is σ = 63111503472. Its totient is φ = 47333627592.

The previous prime is 55222565509. The next prime is 55222565537. The reversal of 55222565531 is 13556522255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13556522255 = 5 ⋅2711304451.

It is a cyclic number.

It is not a de Polignac number, because 55222565531 - 2⁶ = 55222565467 is a prime.

It is a super-2 number, since 2×55222565531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55222565537) 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, 3944468960 + ... + 3944468973.

It is an arithmetic number, because the mean of its divisors is an integer number (15777875868).

Almost surely, 2^55222565531 is an apocalyptic number.

55222565531 is a deficient number, since it is larger than the sum of its proper divisors (7888937941).

55222565531 is an equidigital number, since it uses as much as digits as its factorization.

55222565531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7888937940.

The product of its digits is 450000, while the sum is 41.

The spelling of 55222565531 in words is "fifty-five billion, two hundred twenty-two million, five hundred sixty-five thousand, five hundred thirty-one".