55997234 has 4 divisors (see below), whose sum is σ = 83995854. Its totient is φ = 27998616.

The previous prime is 55997233. The next prime is 55997239. The reversal of 55997234 is 43279955.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43279955 = 5 ⋅8655991.

It can be written as a sum of positive squares in only one way, i.e., 52519009 + 3478225 = 7247^2 + 1865^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55997233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13999307 + ... + 13999310.

Almost surely, 2^55997234 is an apocalyptic number.

55997234 is a deficient number, since it is larger than the sum of its proper divisors (27998620).

55997234 is a wasteful number, since it uses less digits than its factorization.

55997234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27998619.

The product of its digits is 340200, while the sum is 44.

The square root of 55997234 is about 7483.1299601170. The cubic root of 55997234 is about 382.5799374417.

The spelling of 55997234 in words is "fifty-five million, nine hundred ninety-seven thousand, two hundred thirty-four".