55705401 has 10 divisors (see below), whose sum is σ = 83214362. Its totient is φ = 37136880.

The previous prime is 55705399. The next prime is 55705409. The reversal of 55705401 is 10450755.

55705401 is a `hidden beast` number, since 55 + 70 + 540 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51194025 + 4511376 = 7155^2 + 2124^2 .

It is not a de Polignac number, because 55705401 - 2¹ = 55705399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55705409) 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 in 9 ways as a sum of consecutive naturals, for example, 343780 + ... + 343941.

Almost surely, 2^55705401 is an apocalyptic number.

It is an amenable number.

55705401 is a deficient number, since it is larger than the sum of its proper divisors (27508961).

55705401 is an equidigital number, since it uses as much as digits as its factorization.

55705401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687733 (or 687724 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 55705401 is about 7463.6050940547. The cubic root of 55705401 is about 381.9141666384.

The spelling of 55705401 in words is "fifty-five million, seven hundred five thousand, four hundred one".