55540234 has 4 divisors (see below), whose sum is σ = 83310354. Its totient is φ = 27770116.

The previous prime is 55540231. The next prime is 55540259. The reversal of 55540234 is 43204555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43204555 = 5 ⋅8640911.

It can be written as a sum of positive squares in only one way, i.e., 54982225 + 558009 = 7415^2 + 747^2 .

It is not an unprimeable number, because it can be changed into a prime (55540231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13885057 + ... + 13885060.

Almost surely, 2^55540234 is an apocalyptic number.

55540234 is a deficient number, since it is larger than the sum of its proper divisors (27770120).

55540234 is a wasteful number, since it uses less digits than its factorization.

55540234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27770119.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 55540234 is about 7452.5320529334. The cubic root of 55540234 is about 381.5363333536.

Adding to 55540234 its reverse (43204555), we get a palindrome (98744789).

The spelling of 55540234 in words is "fifty-five million, five hundred forty thousand, two hundred thirty-four".