55857401 has 4 divisors (see below), whose sum is σ = 55874292. Its totient is φ = 55840512.

The previous prime is 55857391. The next prime is 55857421. The reversal of 55857401 is 10475855.

55857401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1849600 + 54007801 = 1360^2 + 7349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55857401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55857421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1676 + ... + 10701.

It is an arithmetic number, because the mean of its divisors is an integer number (13968573).

Almost surely, 2^55857401 is an apocalyptic number.

It is an amenable number.

55857401 is a deficient number, since it is larger than the sum of its proper divisors (16891).

55857401 is a wasteful number, since it uses less digits than its factorization.

55857401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16890.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 55857401 is about 7473.7809039334. The cubic root of 55857401 is about 382.2612199590.

The spelling of 55857401 in words is "fifty-five million, eight hundred fifty-seven thousand, four hundred one".