55039742 has 8 divisors (see below), whose sum is σ = 84479736. Its totient is φ = 26879832.

The previous prime is 55039741. The next prime is 55039799. The reversal of 55039742 is 24793055.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55039741) 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, 319913 + ... + 320084.

It is an arithmetic number, because the mean of its divisors is an integer number (10559967).

Almost surely, 2^55039742 is an apocalyptic number.

55039742 is a deficient number, since it is larger than the sum of its proper divisors (29439994).

55039742 is a wasteful number, since it uses less digits than its factorization.

55039742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640042.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 55039742 is about 7418.8774083415. The cubic root of 55039742 is about 380.3868221661.

The spelling of 55039742 in words is "fifty-five million, thirty-nine thousand, seven hundred forty-two".