55561634 has 4 divisors (see below), whose sum is σ = 83342454. Its totient is φ = 27780816.

The previous prime is 55561631. The next prime is 55561663. The reversal of 55561634 is 43616555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43616555 = 5 ⋅8723311.

It can be written as a sum of positive squares in only one way, i.e., 54834025 + 727609 = 7405^2 + 853^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55561594 and 55561603.

It is not an unprimeable number, because it can be changed into a prime (55561631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13890407 + ... + 13890410.

Almost surely, 2^55561634 is an apocalyptic number.

55561634 is a deficient number, since it is larger than the sum of its proper divisors (27780820).

55561634 is a wasteful number, since it uses less digits than its factorization.

55561634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27780819.

The product of its digits is 54000, while the sum is 35.

The square root of 55561634 is about 7453.9676682959. The cubic root of 55561634 is about 381.5853298408.

The spelling of 55561634 in words is "fifty-five million, five hundred sixty-one thousand, six hundred thirty-four".