550645531 has 8 divisors (see below), whose sum is σ = 556539984. Its totient is φ = 544776960.

The previous prime is 550645499. The next prime is 550645547. The reversal of 550645531 is 135546055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 550645531 - 2⁵ = 550645499 is a prime.

It is a super-2 number, since 2×550645531² = 606421001620543922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550642531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37911 + ... + 50383.

It is an arithmetic number, because the mean of its divisors is an integer number (69567498).

Almost surely, 2^550645531 is an apocalyptic number.

550645531 is a deficient number, since it is larger than the sum of its proper divisors (5894453).

550645531 is a wasteful number, since it uses less digits than its factorization.

550645531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12941.

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 550645531 is about 23465.8375303333. The cubic root of 550645531 is about 819.6416890812.

The spelling of 550645531 in words is "five hundred fifty million, six hundred forty-five thousand, five hundred thirty-one".