55505434 has 4 divisors (see below), whose sum is σ = 83258154. Its totient is φ = 27752716.

The previous prime is 55505419. The next prime is 55505491. The reversal of 55505434 is 43450555.

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., 39879225 + 15626209 = 6315^2 + 3953^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55505396 and 55505405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13876357 + ... + 13876360.

Almost surely, 2^55505434 is an apocalyptic number.

55505434 is a deficient number, since it is larger than the sum of its proper divisors (27752720).

55505434 is a wasteful number, since it uses less digits than its factorization.

55505434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27752719.

The product of its (nonzero) digits is 30000, while the sum is 31.

The square root of 55505434 is about 7450.1969101494. The cubic root of 55505434 is about 381.4566299415.

Adding to 55505434 its reverse (43450555), we get a palindrome (98955989).

The spelling of 55505434 in words is "fifty-five million, five hundred five thousand, four hundred thirty-four".