1055221402 has 8 divisors (see below), whose sum is σ = 1594386036. Its totient is φ = 523759392.

The previous prime is 1055221379. The next prime is 1055221423. The reversal of 1055221402 is 2041225501.

It can be written as a sum of positive squares in 2 ways, for example, as 984139641 + 71081761 = 31371^2 + 8431^2 .

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

It is a super-2 number, since 2×1055221402² = 2226984414477691208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1925313 + ... + 1925860.

Almost surely, 2^1055221402 is an apocalyptic number.

1055221402 is a deficient number, since it is larger than the sum of its proper divisors (539164634).

1055221402 is a wasteful number, since it uses less digits than its factorization.

1055221402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3851312.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1055221402 is about 32484.1715609310. The cubic root of 1055221402 is about 1018.0783381959.

Adding to 1055221402 its reverse (2041225501), we get a palindrome (3096446903).

The spelling of 1055221402 in words is "one billion, fifty-five million, two hundred twenty-one thousand, four hundred two".