555142331 has 4 divisors (see below), whose sum is σ = 574285200. Its totient is φ = 535999464.

The previous prime is 555142309. The next prime is 555142363. The reversal of 555142331 is 133241555.

555142331 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: 133241555 = 5 ⋅26648311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-555142331 is a prime.

It is a super-2 number, since 2×555142331² = 616366015336227122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 19142839 = 555142331 / (5 + 5 + 5 + 1 + 4 + 2 + 3 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 555142294 and 555142303.

It is not an unprimeable number, because it can be changed into a prime (555142391) 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, 9571391 + ... + 9571448.

It is an arithmetic number, because the mean of its divisors is an integer number (143571300).

Almost surely, 2^555142331 is an apocalyptic number.

555142331 is a deficient number, since it is larger than the sum of its proper divisors (19142869).

555142331 is a wasteful number, since it uses less digits than its factorization.

555142331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19142868.

The product of its digits is 9000, while the sum is 29.

The square root of 555142331 is about 23561.4585923707. The cubic root of 555142331 is about 821.8668210109.

Adding to 555142331 its reverse (133241555), we get a palindrome (688383886).

The spelling of 555142331 in words is "five hundred fifty-five million, one hundred forty-two thousand, three hundred thirty-one".