56111001 has 24 divisors (see below), whose sum is σ = 79190496. Its totient is φ = 35300160.

The previous prime is 56110987. The next prime is 56111021. The reversal of 56111001 is 10011165.

It is not a de Polignac number, because 56111001 - 2¹¹ = 56108953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56111021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 544716 + ... + 544818.

It is an arithmetic number, because the mean of its divisors is an integer number (3299604).

Almost surely, 2^56111001 is an apocalyptic number.

It is an amenable number.

56111001 is a deficient number, since it is larger than the sum of its proper divisors (23079495).

56111001 is a wasteful number, since it uses less digits than its factorization.

56111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 56111001 is about 7490.7276682576. The cubic root of 56111001 is about 382.8388521890.

Adding to 56111001 its reverse (10011165), we get a palindrome (66122166).

The spelling of 56111001 in words is "fifty-six million, one hundred eleven thousand, one".