55021234 has 4 divisors (see below), whose sum is σ = 82531854. Its totient is φ = 27510616.

The previous prime is 55021223. The next prime is 55021243. The reversal of 55021234 is 43212055.

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

It can be written as a sum of positive squares in only one way, i.e., 52780225 + 2241009 = 7265^2 + 1497^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13755307 + ... + 13755310.

Almost surely, 2^55021234 is an apocalyptic number.

55021234 is a deficient number, since it is larger than the sum of its proper divisors (27510620).

55021234 is a wasteful number, since it uses less digits than its factorization.

55021234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27510619.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 55021234 is about 7417.6299449352. The cubic root of 55021234 is about 380.3441803202.

Adding to 55021234 its reverse (43212055), we get a palindrome (98233289).

It can be divided in two parts, 55021 and 234, that added together give a palindrome (55255).

The spelling of 55021234 in words is "fifty-five million, twenty-one thousand, two hundred thirty-four".