55915801 has 4 divisors (see below), whose sum is σ = 56428900. Its totient is φ = 55402704.

The previous prime is 55915793. The next prime is 55915819. The reversal of 55915801 is 10851955.

55915801 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 49336576 + 6579225 = 7024^2 + 2565^2 .

It is a cyclic number.

It is not a de Polignac number, because 55915801 - 2³ = 55915793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55915831) 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, 256386 + ... + 256603.

It is an arithmetic number, because the mean of its divisors is an integer number (14107225).

Almost surely, 2^55915801 is an apocalyptic number.

It is an amenable number.

55915801 is a deficient number, since it is larger than the sum of its proper divisors (513099).

55915801 is a wasteful number, since it uses less digits than its factorization.

55915801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513098.

The product of its (nonzero) digits is 9000, while the sum is 34.

The square root of 55915801 is about 7477.6868749634. The cubic root of 55915801 is about 382.3943940731.

The spelling of 55915801 in words is "fifty-five million, nine hundred fifteen thousand, eight hundred one".