553421731 has 4 divisors (see below), whose sum is σ = 566919864. Its totient is φ = 539923600.

The previous prime is 553421719. The next prime is 553421747. The reversal of 553421731 is 137124355.

It is a happy number.

553421731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137124355 = 5 ⋅27424871.

It is a cyclic number.

It is not a de Polignac number, because 553421731 - 2¹⁵ = 553388963 is a prime.

It is a super-2 number, since 2×553421731² = 612551224686072722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 553421693 and 553421702.

It is not an unprimeable number, because it can be changed into a prime (553421431) 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, 6749005 + ... + 6749086.

It is an arithmetic number, because the mean of its divisors is an integer number (141729966).

Almost surely, 2^553421731 is an apocalyptic number.

553421731 is a deficient number, since it is larger than the sum of its proper divisors (13498133).

553421731 is a wasteful number, since it uses less digits than its factorization.

553421731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13498132.

The product of its digits is 12600, while the sum is 31.

The square root of 553421731 is about 23524.9172368363. The cubic root of 553421731 is about 821.0168482831.

The spelling of 553421731 in words is "five hundred fifty-three million, four hundred twenty-one thousand, seven hundred thirty-one".