1055121 has 4 divisors (see below), whose sum is σ = 1406832. Its totient is φ = 703412.

The previous prime is 1055113. The next prime is 1055137. The reversal of 1055121 is 1215501.

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 not a de Polignac number, because 1055121 - 2³ = 1055113 is a prime.

It is a super-2 number, since 2×1055121² = 2226560649282, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 1055121.

It is not an unprimeable number, because it can be changed into a prime (1055141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175851 + ... + 175856.

It is an arithmetic number, because the mean of its divisors is an integer number (351708).

2^1055121 is an apocalyptic number.

It is an amenable number.

1055121 is a deficient number, since it is larger than the sum of its proper divisors (351711).

1055121 is an equidigital number, since it uses as much as digits as its factorization.

1055121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351710.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 1055121 is about 1027.1908293983. The cubic root of 1055121 is about 101.8046047865.

It can be divided in two parts, 1055 and 121, that added together give a triangular number (1176 = T₄₈).

The spelling of 1055121 in words is "one million, fifty-five thousand, one hundred twenty-one".