55121434 has 4 divisors (see below), whose sum is σ = 82682154. Its totient is φ = 27560716.

The previous prime is 55121419. The next prime is 55121449. The reversal of 55121434 is 43412155.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (55121419) and next prime (55121449).

It can be written as a sum of positive squares in only one way, i.e., 41409225 + 13712209 = 6435^2 + 3703^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55121399 and 55121408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13780357 + ... + 13780360.

Almost surely, 2^55121434 is an apocalyptic number.

55121434 is a deficient number, since it is larger than the sum of its proper divisors (27560720).

55121434 is a wasteful number, since it uses less digits than its factorization.

55121434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27560719.

The product of its digits is 2400, while the sum is 25.

The square root of 55121434 is about 7424.3810516433. The cubic root of 55121434 is about 380.5749238166.

Adding to 55121434 its reverse (43412155), we get a palindrome (98533589).

It can be divided in two parts, 55121 and 434, that added together give a palindrome (55555).

The spelling of 55121434 in words is "fifty-five million, one hundred twenty-one thousand, four hundred thirty-four".