55561316 has 6 divisors (see below), whose sum is σ = 97232310. Its totient is φ = 27780656.

The previous prime is 55561313. The next prime is 55561349. The reversal of 55561316 is 61316555.

It can be written as a sum of positive squares in only one way, i.e., 47665216 + 7896100 = 6904^2 + 2810^2 .

It is not an unprimeable number, because it can be changed into a prime (55561313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6945161 + ... + 6945168.

It is an arithmetic number, because the mean of its divisors is an integer number (16205385).

Almost surely, 2^55561316 is an apocalyptic number.

It is an amenable number.

55561316 is a deficient number, since it is larger than the sum of its proper divisors (41670994).

55561316 is a wasteful number, since it uses less digits than its factorization.

55561316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13890333 (or 13890331 counting only the distinct ones).

The product of its digits is 13500, while the sum is 32.

The square root of 55561316 is about 7453.9463373437. The cubic root of 55561316 is about 381.5846018543.

The spelling of 55561316 in words is "fifty-five million, five hundred sixty-one thousand, three hundred sixteen".