55621334 has 4 divisors (see below), whose sum is σ = 83432004. Its totient is φ = 27810666.

The previous prime is 55621277. The next prime is 55621367. The reversal of 55621334 is 43312655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43312655 = 5 ⋅8662531.

It is a junction number, because it is equal to n+sod(n) for n = 55621297 and 55621306.

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, 13905332 + ... + 13905335.

It is an arithmetic number, because the mean of its divisors is an integer number (20858001).

Almost surely, 2^55621334 is an apocalyptic number.

55621334 is a deficient number, since it is larger than the sum of its proper divisors (27810670).

55621334 is a wasteful number, since it uses less digits than its factorization.

55621334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27810669.

The product of its digits is 10800, while the sum is 29.

The square root of 55621334 is about 7457.9711718402. The cubic root of 55621334 is about 381.7219498325.

Adding to 55621334 its reverse (43312655), we get a palindrome (98933989).

It can be divided in two parts, 55621 and 334, that added together give a palindrome (55955).

The spelling of 55621334 in words is "fifty-five million, six hundred twenty-one thousand, three hundred thirty-four".