56111521053 has 16 divisors (see below), whose sum is σ = 90532874880. Its totient is φ = 30177624576.

The previous prime is 56111521051. The next prime is 56111521079. The reversal of 56111521053 is 35012511165.

It is not a de Polignac number, because 56111521053 - 2¹ = 56111521051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56111521053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56111521051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78587208 + ... + 78587921.

It is an arithmetic number, because the mean of its divisors is an integer number (5658304680).

Almost surely, 2^56111521053 is an apocalyptic number.

It is an amenable number.

56111521053 is a deficient number, since it is larger than the sum of its proper divisors (34421353827).

56111521053 is a wasteful number, since it uses less digits than its factorization.

56111521053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157175156.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 56111521053 in words is "fifty-six billion, one hundred eleven million, five hundred twenty-one thousand, fifty-three".