1055465050921 has 4 divisors (see below), whose sum is σ = 1060991046144. Its totient is φ = 1049939055700.

The previous prime is 1055465050897. The next prime is 1055465050957. The reversal of 1055465050921 is 1290505645501.

It is a happy number.

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-1055465050921 is a prime.

It is a super-2 number, since 2×1055465050921² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055465050721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2762997325 + ... + 2762997706.

It is an arithmetic number, because the mean of its divisors is an integer number (265247761536).

Almost surely, 2^{1055465050921} is an apocalyptic number.

It is an amenable number.

1055465050921 is a deficient number, since it is larger than the sum of its proper divisors (5525995223).

1055465050921 is an equidigital number, since it uses as much as digits as its factorization.

1055465050921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5525995222.

The product of its (nonzero) digits is 270000, while the sum is 43.

The spelling of 1055465050921 in words is "one trillion, fifty-five billion, four hundred sixty-five million, fifty thousand, nine hundred twenty-one".