1050511552421 has 4 divisors (see below), whose sum is σ = 1062315053100. Its totient is φ = 1038708051744.

The previous prime is 1050511552283. The next prime is 1050511552457. The reversal of 1050511552421 is 1242551150501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 247894452100 + 802617100321 = 497890^2 + 895889^2 .

It is a cyclic number.

It is not a de Polignac number, because 1050511552421 - 2³⁸ = 775633645477 is a prime.

It is a super-2 number, since 2×1050511552421² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1050511552481) 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, 5901750206 + ... + 5901750383.

It is an arithmetic number, because the mean of its divisors is an integer number (265578763275).

Almost surely, 2^{1050511552421} is an apocalyptic number.

It is an amenable number.

1050511552421 is a deficient number, since it is larger than the sum of its proper divisors (11803500679).

1050511552421 is an equidigital number, since it uses as much as digits as its factorization.

1050511552421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11803500678.

The product of its (nonzero) digits is 10000, while the sum is 32.

The spelling of 1050511552421 in words is "one trillion, fifty billion, five hundred eleven million, five hundred fifty-two thousand, four hundred twenty-one".