55742347 has 4 divisors (see below), whose sum is σ = 55988136. Its totient is φ = 55496560.

The previous prime is 55742339. The next prime is 55742359. The reversal of 55742347 is 74324755.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74324755 = 5 ⋅14864951.

It is a cyclic number.

It is not a de Polignac number, because 55742347 - 2³ = 55742339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55742377) 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, 122554 + ... + 123007.

It is an arithmetic number, because the mean of its divisors is an integer number (13997034).

Almost surely, 2^55742347 is an apocalyptic number.

55742347 is a deficient number, since it is larger than the sum of its proper divisors (245789).

55742347 is a wasteful number, since it uses less digits than its factorization.

55742347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245788.

The product of its digits is 117600, while the sum is 37.

The square root of 55742347 is about 7466.0797611598. The cubic root of 55742347 is about 381.9985814481.

It can be divided in two parts, 5574 and 2347, that added together give a square (7921 = 89²).

The spelling of 55742347 in words is "fifty-five million, seven hundred forty-two thousand, three hundred forty-seven".