55557401 has 2 divisors, whose sum is σ = 55557402. Its totient is φ = 55557400.

The previous prime is 55557389. The next prime is 55557413. The reversal of 55557401 is 10475555.

It is a balanced prime because it is at equal distance from previous prime (55557389) and next prime (55557413).

It can be written as a sum of positive squares in only one way, i.e., 55517401 + 40000 = 7451^2 + 200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55557401 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (55557421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27778700 + 27778701.

It is an arithmetic number, because the mean of its divisors is an integer number (27778701).

Almost surely, 2^55557401 is an apocalyptic number.

It is an amenable number.

55557401 is a deficient number, since it is larger than the sum of its proper divisors (1).

55557401 is an equidigital number, since it uses as much as digits as its factorization.

55557401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 55557401 is about 7453.6837201480. The cubic root of 55557401 is about 381.5756391507.

The spelling of 55557401 in words is "fifty-five million, five hundred fifty-seven thousand, four hundred one".