55243774 has 4 divisors (see below), whose sum is σ = 82865664. Its totient is φ = 27621886.

The previous prime is 55243763. The next prime is 55243781. The reversal of 55243774 is 47734255.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13810942 + ... + 13810945.

It is an arithmetic number, because the mean of its divisors is an integer number (20716416).

Almost surely, 2^55243774 is an apocalyptic number.

55243774 is a deficient number, since it is larger than the sum of its proper divisors (27621890).

55243774 is a wasteful number, since it uses less digits than its factorization.

55243774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27621889.

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

The square root of 55243774 is about 7432.6155557785. The cubic root of 55243774 is about 380.8562731302.

The spelling of 55243774 in words is "fifty-five million, two hundred forty-three thousand, seven hundred seventy-four".