55557115 has 16 divisors (see below), whose sum is σ = 69166080. Its totient is φ = 42795360.

The previous prime is 55557113. The next prime is 55557133. The reversal of 55557115 is 51175555.

It is a happy number.

It is not a de Polignac number, because 55557115 - 2¹ = 55557113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55557113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34396 + ... + 35974.

It is an arithmetic number, because the mean of its divisors is an integer number (4322880).

Almost surely, 2^55557115 is an apocalyptic number.

55557115 is a deficient number, since it is larger than the sum of its proper divisors (13608965).

55557115 is a wasteful number, since it uses less digits than its factorization.

55557115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842.

The product of its digits is 21875, while the sum is 34.

The square root of 55557115 is about 7453.6645349788. The cubic root of 55557115 is about 381.5749843876.

The spelling of 55557115 in words is "fifty-five million, five hundred fifty-seven thousand, one hundred fifteen".