56051001021 has 8 divisors (see below), whose sum is σ = 76144756320. Its totient is φ = 36662289872.

The previous prime is 56051001007. The next prime is 56051001037. The reversal of 56051001021 is 12010015065.

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 56051001021 - 2¹⁹ = 56050476733 is a prime.

It is a super-2 number, since 2×56051001021² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56051001821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176260851 + ... + 176261168.

It is an arithmetic number, because the mean of its divisors is an integer number (9518094540).

Almost surely, 2^56051001021 is an apocalyptic number.

It is an amenable number.

56051001021 is a deficient number, since it is larger than the sum of its proper divisors (20093755299).

56051001021 is a wasteful number, since it uses less digits than its factorization.

56051001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352522075.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 56051001021 its reverse (12010015065), we get a palindrome (68061016086).

The spelling of 56051001021 in words is "fifty-six billion, fifty-one million, one thousand, twenty-one".