55239742 has 8 divisors (see below), whose sum is σ = 85099176. Its totient is φ = 26873352.

The previous prime is 55239697. The next prime is 55239761. The reversal of 55239742 is 24793255.

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

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373168 + ... + 373315.

It is an arithmetic number, because the mean of its divisors is an integer number (10637397).

Almost surely, 2^55239742 is an apocalyptic number.

55239742 is a deficient number, since it is larger than the sum of its proper divisors (29859434).

55239742 is a wasteful number, since it uses less digits than its factorization.

55239742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746522.

The product of its digits is 75600, while the sum is 37.

The square root of 55239742 is about 7432.3443138757. The cubic root of 55239742 is about 380.8470072302.

The spelling of 55239742 in words is "fifty-five million, two hundred thirty-nine thousand, seven hundred forty-two".