55557937 has 2 divisors, whose sum is σ = 55557938. Its totient is φ = 55557936.

The previous prime is 55557923. The next prime is 55557967. The reversal of 55557937 is 73975555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52765696 + 2792241 = 7264^2 + 1671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55557937 is a prime.

It is not a weakly prime, because it can be changed into another prime (55557907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27778968 + 27778969.

It is an arithmetic number, because the mean of its divisors is an integer number (27778969).

Almost surely, 2^55557937 is an apocalyptic number.

It is an amenable number.

55557937 is a deficient number, since it is larger than the sum of its proper divisors (1).

55557937 is an equidigital number, since it uses as much as digits as its factorization.

55557937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 826875, while the sum is 46.

The square root of 55557937 is about 7453.7196754372. The cubic root of 55557937 is about 381.5768662533.

The spelling of 55557937 in words is "fifty-five million, five hundred fifty-seven thousand, nine hundred thirty-seven".