550420156031 has 4 divisors (see below), whose sum is σ = 551278846464. Its totient is φ = 549561465600.

The previous prime is 550420156019. The next prime is 550420156061. The reversal of 550420156031 is 130651024055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130651024055 = 5 ⋅26130204811.

It is a cyclic number.

It is not a de Polignac number, because 550420156031 - 2¹⁸ = 550419893887 is a prime.

It is a super-3 number, since 3×550420156031³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550420156061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429344255 + ... + 429345536.

It is an arithmetic number, because the mean of its divisors is an integer number (137819711616).

Almost surely, 2^550420156031 is an apocalyptic number.

550420156031 is a deficient number, since it is larger than the sum of its proper divisors (858690433).

550420156031 is an equidigital number, since it uses as much as digits as its factorization.

550420156031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858690432.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 550420156031 in words is "five hundred fifty billion, four hundred twenty million, one hundred fifty-six thousand, thirty-one".