55870901 has 4 divisors (see below), whose sum is σ = 56135904. Its totient is φ = 55605900.

The previous prime is 55870879. The next prime is 55870909. The reversal of 55870901 is 10907855.

55870901 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55870901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55870909) 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, 132185 + ... + 132606.

It is an arithmetic number, because the mean of its divisors is an integer number (14033976).

Almost surely, 2^55870901 is an apocalyptic number.

It is an amenable number.

55870901 is a deficient number, since it is larger than the sum of its proper divisors (265003).

55870901 is a wasteful number, since it uses less digits than its factorization.

55870901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265002.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 55870901 is about 7474.6840066989. The cubic root of 55870901 is about 382.2920133166.

The spelling of 55870901 in words is "fifty-five million, eight hundred seventy thousand, nine hundred one".