55561001010 has 32 divisors (see below), whose sum is σ = 135224525952. Its totient is φ = 14607586560.

The previous prime is 55561000997. The next prime is 55561001011. The reversal of 55561001010 is 1010016555.

It is not an unprimeable number, because it can be changed into a prime (55561001011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13040359 + ... + 13044618.

It is an arithmetic number, because the mean of its divisors is an integer number (4225766436).

Almost surely, 2^55561001010 is an apocalyptic number.

55561001010 is an abundant number, since it is smaller than the sum of its proper divisors (79663524942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55561001010 is a wasteful number, since it uses less digits than its factorization.

55561001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26085058.

The product of its (nonzero) digits is 750, while the sum is 24.

Adding to 55561001010 its reverse (1010016555), we get a palindrome (56571017565).

The spelling of 55561001010 in words is "fifty-five billion, five hundred sixty-one million, one thousand, ten".