42556521055 has 8 divisors (see below), whose sum is σ = 51153084000. Its totient is φ = 33988377696.

The previous prime is 42556520921. The next prime is 42556521061. The reversal of 42556521055 is 55012565524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42556521055 - 2⁹ = 42556520543 is a prime.

It is a super-2 number, since 2×42556521055² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42556520999 and 42556521017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7101600 + ... + 7107589.

It is an arithmetic number, because the mean of its divisors is an integer number (6394135500).

Almost surely, 2^42556521055 is an apocalyptic number.

42556521055 is a deficient number, since it is larger than the sum of its proper divisors (8596562945).

42556521055 is a wasteful number, since it uses less digits than its factorization.

42556521055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14209793.

The product of its (nonzero) digits is 300000, while the sum is 40.

The spelling of 42556521055 in words is "forty-two billion, five hundred fifty-six million, five hundred twenty-one thousand, fifty-five".