5581440542 has 4 divisors (see below), whose sum is σ = 8372160816. Its totient is φ = 2790720270.

The previous prime is 5581440541. The next prime is 5581440559. The reversal of 5581440542 is 2450441855.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 5581440496 and 5581440505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5581440541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1395360134 + ... + 1395360137.

It is an arithmetic number, because the mean of its divisors is an integer number (2093040204).

Almost surely, 2^5581440542 is an apocalyptic number.

5581440542 is a deficient number, since it is larger than the sum of its proper divisors (2790720274).

5581440542 is a wasteful number, since it uses less digits than its factorization.

5581440542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790720273.

The product of its (nonzero) digits is 128000, while the sum is 38.

The square root of 5581440542 is about 74709.0392255181. The cubic root of 5581440542 is about 1773.8440444995.

The spelling of 5581440542 in words is "five billion, five hundred eighty-one million, four hundred forty thousand, five hundred forty-two".