550556051 has 4 divisors (see below), whose sum is σ = 551237400. Its totient is φ = 549874704.

The previous prime is 550556021. The next prime is 550556053. The reversal of 550556051 is 150655055.

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 550556051 - 2¹⁴ = 550539667 is a prime.

It is a super-2 number, since 2×550556051² = 606223930585429202, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 550555999 and 550556017.

It is not an unprimeable number, because it can be changed into a prime (550556053) 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, 339461 + ... + 341078.

It is an arithmetic number, because the mean of its divisors is an integer number (137809350).

Almost surely, 2^550556051 is an apocalyptic number.

550556051 is a deficient number, since it is larger than the sum of its proper divisors (681349).

550556051 is an equidigital number, since it uses as much as digits as its factorization.

550556051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681348.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 550556051 is about 23463.9308514153. The cubic root of 550556051 is about 819.5972893678.

The spelling of 550556051 in words is "five hundred fifty million, five hundred fifty-six thousand, fifty-one".